2638601916 has 48 divisors (see below), whose sum is σ = 6217392384. Its totient is φ = 870902656.

The previous prime is 2638601881. The next prime is 2638601939. The reversal of 2638601916 is 6191068362.

It is a super-2 number, since 2×2638601916² = 13924440142237742112, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 726481 + ... + 730103.

It is an arithmetic number, because the mean of its divisors is an integer number (129529008).

Almost surely, 2^2638601916 is an apocalyptic number.

It is an amenable number.

2638601916 is an abundant number, since it is smaller than the sum of its proper divisors (3578790468).

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

2638601916 is a wasteful number, since it uses less digits than its factorization.

2638601916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4210 (or 4208 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 2638601916 is about 51367.3234264741. The cubic root of 2638601916 is about 1381.8406293828.

The spelling of 2638601916 in words is "two billion, six hundred thirty-eight million, six hundred one thousand, nine hundred sixteen".