38689689652 has 6 divisors (see below), whose sum is σ = 67706956898. Its totient is φ = 19344844824.

The previous prime is 38689689611. The next prime is 38689689659. The reversal of 38689689652 is 25698698683.

It can be written as a sum of positive squares in only one way, i.e., 36877825296 + 1811864356 = 192036^2 + 42566^2 .

It is a super-2 number, since 2×38689689652² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38689689659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4836211203 + ... + 4836211210.

Almost surely, 2^38689689652 is an apocalyptic number.

It is an amenable number.

38689689652 is a deficient number, since it is larger than the sum of its proper divisors (29017267246).

38689689652 is a wasteful number, since it uses less digits than its factorization.

38689689652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9672422417 (or 9672422415 counting only the distinct ones).

The product of its digits is 268738560, while the sum is 70.

The spelling of 38689689652 in words is "thirty-eight billion, six hundred eighty-nine million, six hundred eighty-nine thousand, six hundred fifty-two".