| Base | Representation |
|---|---|
| bin | 1110110100100010… |
| … | …0110101001000000 |
| 3 | 101021021011111010000 |
| 4 | 3231020212221000 |
| 5 | 31121441034431 |
| 6 | 1454440040000 |
| 7 | 200406212652 |
| oct | 35510465100 |
| 9 | 11237144100 |
| 10 | 3978455616 |
| 11 | 1761809653 |
| 12 | 930463000 |
| 13 | 4b531a365 |
| 14 | 29a5466d2 |
| 15 | 18441b9e6 |
| hex | ed226a40 |
3978455616 has 140 divisors (see below), whose sum is σ = 11956079212. Its totient is φ = 1307860992.
The previous prime is 3978455603. The next prime is 3978455629. The reversal of 3978455616 is 6165548793.
3978455616 is a `hidden beast` number, since 3 + 9 + 7 + 84 + 556 + 1 + 6 = 666.
It is an interprime number because it is at equal distance from previous prime (3978455603) and next prime (3978455629).
It can be written as a sum of positive squares in 2 ways, for example, as 702038016 + 3276417600 = 26496^2 + 57240^2 .
It is a Harshad number since it is a multiple of its sum of digits (54).
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 373176 + ... + 383688.
Almost surely, 23978455616 is an apocalyptic number.
3978455616 is a gapful number since it is divisible by the number (36) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 3978455616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5978039606).
3978455616 is an abundant number, since it is smaller than the sum of its proper divisors (7977623596).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
3978455616 is a wasteful number, since it uses less digits than its factorization.
3978455616 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 10610 (or 10591 counting only the distinct ones).
The product of its digits is 5443200, while the sum is 54.
The square root of 3978455616 is about 63074.9999286564. Note that the first 4 decimals coincide. The cubic root of 3978455616 is about 1584.5459550555.
The spelling of 3978455616 in words is "three billion, nine hundred seventy-eight million, four hundred fifty-five thousand, six hundred sixteen".
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