185312631834 has 36 divisors (see below), whose sum is σ = 441329950698. Its totient is φ = 56155342320.

The previous prime is 185312631793. The next prime is 185312631839. The reversal of 185312631834 is 438136213581.

It is a happy number.

185312631834 is a `hidden beast` number, since 1 + 8 + 5 + 3 + 1 + 2 + 631 + 8 + 3 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 183051344025 + 2261287809 = 427845^2 + 47553^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 185312631834.

It is not an unprimeable number, because it can be changed into a prime (185312631839) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 42539749 + ... + 42544104.

Almost surely, 2^185312631834 is an apocalyptic number.

185312631834 is an abundant number, since it is smaller than the sum of its proper divisors (256017318864).

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

185312631834 is a wasteful number, since it uses less digits than its factorization.

185312631834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85083883 (or 85083869 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The spelling of 185312631834 in words is "one hundred eighty-five billion, three hundred twelve million, six hundred thirty-one thousand, eight hundred thirty-four".