38861918 has 8 divisors (see below), whose sum is σ = 58461912. Its totient is φ = 19374616.

The previous prime is 38861899. The next prime is 38861923. The reversal of 38861918 is 81916883.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27305 + ... + 28692.

It is an arithmetic number, because the mean of its divisors is an integer number (7307739).

Almost surely, 2^38861918 is an apocalyptic number.

38861918 is a deficient number, since it is larger than the sum of its proper divisors (19599994).

38861918 is a wasteful number, since it uses less digits than its factorization.

38861918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56346.

The product of its digits is 82944, while the sum is 44.

The square root of 38861918 is about 6233.9327875748. The cubic root of 38861918 is about 338.7204443107.

The spelling of 38861918 in words is "thirty-eight million, eight hundred sixty-one thousand, nine hundred eighteen".