2638417812 has 72 divisors (see below), whose sum is σ = 6422724000. Its totient is φ = 842892480.

The previous prime is 2638417807. The next prime is 2638417823. The reversal of 2638417812 is 2187148362.

It is a super-2 number, since 2×2638417812² = 13922497101357734688, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1255939 + ... + 1258037.

It is an arithmetic number, because the mean of its divisors is an integer number (89204500).

Almost surely, 2^2638417812 is an apocalyptic number.

It is an amenable number.

2638417812 is an abundant number, since it is smaller than the sum of its proper divisors (3784306188).

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

2638417812 is a wasteful number, since it uses less digits than its factorization.

2638417812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2277 (or 2244 counting only the distinct ones).

The product of its digits is 129024, while the sum is 42.

The square root of 2638417812 is about 51365.5313610207. The cubic root of 2638417812 is about 1381.8084901019.

The spelling of 2638417812 in words is "two billion, six hundred thirty-eight million, four hundred seventeen thousand, eight hundred twelve".