38894531 has 4 divisors (see below), whose sum is σ = 41886432. Its totient is φ = 35902632.

The previous prime is 38894519. The next prime is 38894549. The reversal of 38894531 is 13549883.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13549883 = 31 ⋅437093.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38894531 is a prime.

It is a super-2 number, since 2×38894531² = 3025569083419922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38894561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1495931 + ... + 1495956.

It is an arithmetic number, because the mean of its divisors is an integer number (10471608).

Almost surely, 2^38894531 is an apocalyptic number.

38894531 is a deficient number, since it is larger than the sum of its proper divisors (2991901).

38894531 is a wasteful number, since it uses less digits than its factorization.

38894531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2991900.

The product of its digits is 103680, while the sum is 41.

The square root of 38894531 is about 6236.5480035032. The cubic root of 38894531 is about 338.8151694446.

The spelling of 38894531 in words is "thirty-eight million, eight hundred ninety-four thousand, five hundred thirty-one".