38694681 has 12 divisors (see below), whose sum is σ = 56296240. Its totient is φ = 25610040.

The previous prime is 38694661. The next prime is 38694707. The reversal of 38694681 is 18649683.

It is not a de Polignac number, because 38694681 - 2⁷ = 38694553 is a prime.

It is a super-2 number, since 2×38694681² = 2994556675383522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38694631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14215 + ... + 16716.

Almost surely, 2^38694681 is an apocalyptic number.

It is an amenable number.

38694681 is a deficient number, since it is larger than the sum of its proper divisors (17601559).

38694681 is a wasteful number, since it uses less digits than its factorization.

38694681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31076 (or 31073 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 38694681 is about 6220.5048830461. The cubic root of 38694681 is about 338.2338664845.

The spelling of 38694681 in words is "thirty-eight million, six hundred ninety-four thousand, six hundred eighty-one".