38366681 has 16 divisors (see below), whose sum is σ = 42120000. Its totient is φ = 34808256.

The previous prime is 38366677. The next prime is 38366687. The reversal of 38366681 is 18666383.

It is a cyclic number.

It is not a de Polignac number, because 38366681 - 2² = 38366677 is a prime.

It is a super-2 number, since 2×38366681² = 2944004421911522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38366687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98435 + ... + 98823.

It is an arithmetic number, because the mean of its divisors is an integer number (2632500).

Almost surely, 2^38366681 is an apocalyptic number.

It is an amenable number.

38366681 is a deficient number, since it is larger than the sum of its proper divisors (3753319).

38366681 is a wasteful number, since it uses less digits than its factorization.

38366681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616.

The product of its digits is 124416, while the sum is 41.

The square root of 38366681 is about 6194.0843552538. The cubic root of 38366681 is about 337.2754603399.

The spelling of 38366681 in words is "thirty-eight million, three hundred sixty-six thousand, six hundred eighty-one".