18829600644 has 24 divisors (see below), whose sum is σ = 44281689088. Its totient is φ = 6227111520.

The previous prime is 18829600631. The next prime is 18829600661. The reversal of 18829600644 is 44600692881.

It is a junction number, because it is equal to n+sod(n) for n = 18829600593 and 18829600602.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6176167 + ... + 6179214.

Almost surely, 2^18829600644 is an apocalyptic number.

It is an amenable number.

18829600644 is an abundant number, since it is smaller than the sum of its proper divisors (25452088444).

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

18829600644 is a wasteful number, since it uses less digits than its factorization.

18829600644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12355515 (or 12355513 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 48.

The spelling of 18829600644 in words is "eighteen billion, eight hundred twenty-nine million, six hundred thousand, six hundred forty-four".