38732601636 has 27 divisors (see below), whose sum is σ = 97910394673. Its totient is φ = 12910473600.

The previous prime is 38732601631. The next prime is 38732601643. The reversal of 38732601636 is 63610623783.

The square root of 38732601636 is 196806.

It is a perfect power (a square), and thus also a powerful number.

38732601636 is a `hidden beast` number, since 3 + 8 + 7 + 3 + 2 + 6 + 0 + 1 + 636 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5899161636 + 32833440000 = 76806^2 + 181200^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38732601591 and 38732601600.

It is not an unprimeable number, because it can be changed into a prime (38732601631) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1164436 + ... + 1197236.

Almost surely, 2^38732601636 is an apocalyptic number.

38732601636 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

38732601636 is the 196806-th square number.

It is an amenable number.

38732601636 is an abundant number, since it is smaller than the sum of its proper divisors (59177793037).

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

38732601636 is an frugal number, since it uses more digits than its factorization.

38732601636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65612 (or 32806 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 45.

The spelling of 38732601636 in words is "thirty-eight billion, seven hundred thirty-two million, six hundred one thousand, six hundred thirty-six".