3638899928 has 16 divisors (see below), whose sum is σ = 6823578480. Its totient is φ = 1819279008.

The previous prime is 3638899889. The next prime is 3638899949. The reversal of 3638899928 is 8299988363.

3638899928 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 148826 + ... + 171542.

It is an arithmetic number, because the mean of its divisors is an integer number (426473655).

Almost surely, 2^3638899928 is an apocalyptic number.

It is an amenable number.

3638899928 is a deficient number, since it is larger than the sum of its proper divisors (3184678552).

3638899928 is a wasteful number, since it uses less digits than its factorization.

3638899928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42746 (or 42742 counting only the distinct ones).

The product of its digits is 40310784, while the sum is 65.

The square root of 3638899928 is about 60323.2950691522. The cubic root of 3638899928 is about 1538.1193560656.

The spelling of 3638899928 in words is "three billion, six hundred thirty-eight million, eight hundred ninety-nine thousand, nine hundred twenty-eight".