3638511936 has 42 divisors (see below), whose sum is σ = 10429139162. Its totient is φ = 1212837120.

The previous prime is 3638511871. The next prime is 3638511959. The reversal of 3638511936 is 6391158363.

3638511936 is a `hidden beast` number, since 3 + 638 + 5 + 1 + 1 + 9 + 3 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3511273536 + 127238400 = 59256^2 + 11280^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3638511891 and 3638511900.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3157855 + ... + 3159006.

Almost surely, 2^3638511936 is an apocalyptic number.

3638511936 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3638511936 is an abundant number, since it is smaller than the sum of its proper divisors (6790627226).

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

3638511936 is a wasteful number, since it uses less digits than its factorization.

3638511936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6316879 (or 6316866 counting only the distinct ones).

The product of its digits is 349920, while the sum is 45.

The square root of 3638511936 is about 60320.0790450410. The cubic root of 3638511936 is about 1538.0646876009.

The spelling of 3638511936 in words is "three billion, six hundred thirty-eight million, five hundred eleven thousand, nine hundred thirty-six".