2638934436 has 12 divisors (see below), whose sum is σ = 6157513712. Its totient is φ = 879644808.

The previous prime is 2638934401. The next prime is 2638934447. The reversal of 2638934436 is 6344398362.

It is a happy number.

2638934436 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109955590 + ... + 109955613.

Almost surely, 2^2638934436 is an apocalyptic number.

It is an amenable number.

2638934436 is an abundant number, since it is smaller than the sum of its proper divisors (3518579276).

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

2638934436 is a wasteful number, since it uses less digits than its factorization.

2638934436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219911210 (or 219911208 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 48.

The square root of 2638934436 is about 51370.5600125208. The cubic root of 2638934436 is about 1381.8986740544.

The spelling of 2638934436 in words is "two billion, six hundred thirty-eight million, nine hundred thirty-four thousand, four hundred thirty-six".