512081830638 has 48 divisors (see below), whose sum is σ = 1268459992800. Its totient is φ = 146257420608.

The previous prime is 512081830613. The next prime is 512081830657. The reversal of 512081830638 is 836038180215.

512081830638 is a `hidden beast` number, since 5 + 1 + 2 + 0 + 8 + 1 + 8 + 3 + 0 + 638 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 512081830593 and 512081830602.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 358813 + ... + 1073736.

It is an arithmetic number, because the mean of its divisors is an integer number (26426249850).

Almost surely, 2^512081830638 is an apocalyptic number.

512081830638 is an abundant number, since it is smaller than the sum of its proper divisors (756378162162).

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

512081830638 is a wasteful number, since it uses less digits than its factorization.

512081830638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1435401 (or 1435398 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The spelling of 512081830638 in words is "five hundred twelve billion, eighty-one million, eight hundred thirty thousand, six hundred thirty-eight".