38641863 has 24 divisors (see below), whose sum is σ = 58034032. Its totient is φ = 22733568.

The previous prime is 38641859. The next prime is 38641913. The reversal of 38641863 is 36814683.

It is not a de Polignac number, because 38641863 - 2² = 38641859 is a prime.

It is a super-2 number, since 2×38641863² = 2986387152221538, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38641843) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19695 + ... + 21567.

Almost surely, 2^38641863 is an apocalyptic number.

38641863 is a deficient number, since it is larger than the sum of its proper divisors (19392169).

38641863 is a wasteful number, since it uses less digits than its factorization.

38641863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1935 (or 1912 counting only the distinct ones).

The product of its digits is 82944, while the sum is 39.

The square root of 38641863 is about 6216.2579579680. The cubic root of 38641863 is about 338.0799006979.

The spelling of 38641863 in words is "thirty-eight million, six hundred forty-one thousand, eight hundred sixty-three".