38363913 has 18 divisors (see below), whose sum is σ = 64462554. Its totient is φ = 21921984.

The previous prime is 38363903. The next prime is 38363921. The reversal of 38363913 is 31936383.

38363913 is a `hidden beast` number, since 3 + 8 + 3 + 639 + 13 = 666.

It can be written as a sum of positive squares in only one way, i.e., 36324729 + 2039184 = 6027^2 + 1428^2 .

It is not a de Polignac number, because 38363913 - 2⁹ = 38363401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38363903) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 43056 + ... + 43937.

It is an arithmetic number, because the mean of its divisors is an integer number (3581253).

Almost surely, 2^38363913 is an apocalyptic number.

It is an amenable number.

38363913 is a deficient number, since it is larger than the sum of its proper divisors (26098641).

38363913 is a wasteful number, since it uses less digits than its factorization.

38363913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87013 (or 87003 counting only the distinct ones).

The product of its digits is 34992, while the sum is 36.

The square root of 38363913 is about 6193.8609122259. The cubic root of 38363913 is about 337.2673491273.

The spelling of 38363913 in words is "thirty-eight million, three hundred sixty-three thousand, nine hundred thirteen".