38669631 has 64 divisors (see below), whose sum is σ = 70533120. Its totient is φ = 18195840.

The previous prime is 38669629. The next prime is 38669639. The reversal of 38669631 is 13696683.

It is not a de Polignac number, because 38669631 - 2¹ = 38669629 is a prime.

It is a super-2 number, since 2×38669631² = 2990680723352322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38669639) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 237156 + ... + 237318.

It is an arithmetic number, because the mean of its divisors is an integer number (1102080).

Almost surely, 2^38669631 is an apocalyptic number.

38669631 is a deficient number, since it is larger than the sum of its proper divisors (31863489).

38669631 is a wasteful number, since it uses less digits than its factorization.

38669631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276.

The product of its digits is 139968, while the sum is 42.

The square root of 38669631 is about 6218.4910549103. The cubic root of 38669631 is about 338.1608625888.

The spelling of 38669631 in words is "thirty-eight million, six hundred sixty-nine thousand, six hundred thirty-one".