2638667000 has 32 divisors (see below), whose sum is σ = 6174483120. Its totient is φ = 1055466400.

The previous prime is 2638666981. The next prime is 2638667029. The reversal of 2638667000 is 7668362.

It is a congruent number.

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, 1318334 + ... + 1320333.

Almost surely, 2^2638667000 is an apocalyptic number.

2638667000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2638667000 is an abundant number, since it is smaller than the sum of its proper divisors (3535816120).

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

2638667000 is a wasteful number, since it uses less digits than its factorization.

2638667000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2638688 (or 2638674 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 2638667000 is about 51367.9569381536. The cubic root of 2638667000 is about 1381.8519908258.

The spelling of 2638667000 in words is "two billion, six hundred thirty-eight million, six hundred sixty-seven thousand".