38513855 has 16 divisors (see below), whose sum is σ = 49968480. Its totient is φ = 28397952.

The previous prime is 38513837. The next prime is 38513897. The reversal of 38513855 is 55831583.

It is a cyclic number.

It is not a de Polignac number, because 38513855 - 2⁸ = 38513599 is a prime.

It is a super-2 number, since 2×38513855² = 2966634053922050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1964 + ... + 8993.

It is an arithmetic number, because the mean of its divisors is an integer number (3123030).

Almost surely, 2^38513855 is an apocalyptic number.

38513855 is a deficient number, since it is larger than the sum of its proper divisors (11454625).

38513855 is a wasteful number, since it uses less digits than its factorization.

38513855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11018.

The product of its digits is 72000, while the sum is 38.

The square root of 38513855 is about 6205.9531902843. The cubic root of 38513855 is about 337.7061712397.

The spelling of 38513855 in words is "thirty-eight million, five hundred thirteen thousand, eight hundred fifty-five".