394792953156 has 180 divisors, whose sum is σ = 1209337388028. Its totient is φ = 111974026752.

The previous prime is 394792953073. The next prime is 394792953169. The reversal of 394792953156 is 651359297493.

394792953156 is a `hidden beast` number, since 3 + 9 + 4 + 7 + 92 + 9 + 531 + 5 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 106004941056 + 288788012100 = 325584^2 + 537390^2 .

It is a super-2 number, since 2×394792953156² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 394792953093 and 394792953102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 2084256 + ... + 2265768.

Almost surely, 2^394792953156 is an apocalyptic number.

394792953156 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 394792953156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (604668694014).

394792953156 is an abundant number, since it is smaller than the sum of its proper divisors (814544434872).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

394792953156 is a wasteful number, since it uses less digits than its factorization.

394792953156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181680 (or 181662 counting only the distinct ones).

The product of its digits is 55112400, while the sum is 63.

The spelling of 394792953156 in words is "three hundred ninety-four billion, seven hundred ninety-two million, nine hundred fifty-three thousand, one hundred fifty-six".