38655813 has 16 divisors (see below), whose sum is σ = 59102336. Its totient is φ = 22014720.

The previous prime is 38655809. The next prime is 38655829. The reversal of 38655813 is 31855683.

It is not a de Polignac number, because 38655813 - 2² = 38655809 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38655313) 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, 3633 + ... + 9513.

It is an arithmetic number, because the mean of its divisors is an integer number (3693896).

Almost surely, 2^38655813 is an apocalyptic number.

It is an amenable number.

38655813 is a deficient number, since it is larger than the sum of its proper divisors (20446523).

38655813 is a wasteful number, since it uses less digits than its factorization.

38655813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6204.

The product of its digits is 86400, while the sum is 39.

The square root of 38655813 is about 6217.3799144012. The cubic root of 38655813 is about 338.1205789229.

The spelling of 38655813 in words is "thirty-eight million, six hundred fifty-five thousand, eight hundred thirteen".