| Base | Representation |
|---|---|
| bin | 110000111011001… |
| … | …1110110111010000 |
| 3 | 11020102002120211000 |
| 4 | 1201312132313100 |
| 5 | 11330232002034 |
| 6 | 430522422000 |
| 7 | 55452661110 |
| oct | 14166366720 |
| 9 | 4212076730 |
| 10 | 1641672144 |
| 11 | 772754642 |
| 12 | 399961900 |
| 13 | 202166748 |
| 14 | 118061040 |
| 15 | 991d1599 |
| hex | 61d9edd0 |
1641672144 has 160 divisors (see below), whose sum is σ = 5517146880. Its totient is φ = 457574400.
The previous prime is 1641672091. The next prime is 1641672157. The reversal of 1641672144 is 4412761461.
It is a happy number.
1641672144 is a `hidden beast` number, since 1 + 641 + 6 + 7 + 2 + 1 + 4 + 4 = 666.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a nude number because it is divisible by every one of its digits.
It is a junction number, because it is equal to n+sod(n) for n = 1641672099 and 1641672108.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117364 + ... + 130604.
It is an arithmetic number, because the mean of its divisors is an integer number (34482168).
Almost surely, 21641672144 is an apocalyptic number.
1641672144 is a gapful number since it is divisible by the number (14) 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 1641672144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2758573440).
1641672144 is an abundant number, since it is smaller than the sum of its proper divisors (3875474736).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1641672144 is a wasteful number, since it uses less digits than its factorization.
1641672144 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 13306 (or 13294 counting only the distinct ones).
The product of its digits is 32256, while the sum is 36.
The square root of 1641672144 is about 40517.5535293038. The cubic root of 1641672144 is about 1179.6743676783.
The spelling of 1641672144 in words is "one billion, six hundred forty-one million, six hundred seventy-two thousand, one hundred forty-four".
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