394812735136 has 36 divisors (see below), whose sum is σ = 788081547582. Its totient is φ = 194702086656.

The previous prime is 394812735133. The next prime is 394812735137. The reversal of 394812735136 is 631537218493.

It can be written as a sum of positive squares in 3 ways, for example, as 258979210000 + 135833525136 = 508900^2 + 368556^2 .

It is not an unprimeable number, because it can be changed into a prime (394812735133) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 987091 + ... + 1328146.

Almost surely, 2^394812735136 is an apocalyptic number.

It is an amenable number.

394812735136 is a deficient number, since it is larger than the sum of its proper divisors (393268812446).

394812735136 is an equidigital number, since it uses as much as digits as its factorization.

394812735136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2315393 (or 2315312 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 52.

The spelling of 394812735136 in words is "three hundred ninety-four billion, eight hundred twelve million, seven hundred thirty-five thousand, one hundred thirty-six".