| Base | Representation |
|---|---|
| bin | 1000000010100011… |
| … | …1000110001011000 |
| 3 | 12120102001000111100 |
| 4 | 2000220320301120 |
| 5 | 13404444430234 |
| 6 | 554053431400 |
| 7 | 104324261643 |
| oct | 20050706130 |
| 9 | 5512030440 |
| 10 | 2158201944 |
| 11 | a08281078 |
| 12 | 50293b560 |
| 13 | 285188592 |
| 14 | 1668baa5a |
| 15 | c9712399 |
| hex | 80a38c58 |
2158201944 has 96 divisors (see below), whose sum is σ = 6200251200. Its totient is φ = 676278720.
The previous prime is 2158201943. The next prime is 2158201957. The reversal of 2158201944 is 4491028512.
2158201944 is a `hidden beast` number, since 21 + 582 + 0 + 19 + 44 = 666.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a junction number, because it is equal to n+sod(n) for n = 2158201899 and 2158201908.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2158201943) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 173187 + ... + 185229.
It is an arithmetic number, because the mean of its divisors is an integer number (64585950).
Almost surely, 22158201944 is an apocalyptic number.
2158201944 is a gapful number since it is divisible by the number (24) 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 2158201944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3100125600).
2158201944 is an abundant number, since it is smaller than the sum of its proper divisors (4042049256).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2158201944 is a wasteful number, since it uses less digits than its factorization.
2158201944 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 12205 (or 12198 counting only the distinct ones).
The product of its (nonzero) digits is 23040, while the sum is 36.
The square root of 2158201944 is about 46456.4521245435. The cubic root of 2158201944 is about 1292.3020297960.
The spelling of 2158201944 in words is "two billion, one hundred fifty-eight million, two hundred one thousand, nine hundred forty-four".
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