38815161 has 32 divisors (see below), whose sum is σ = 65138688. Its totient is φ = 19971840.

The previous prime is 38815141. The next prime is 38815181. The reversal of 38815161 is 16151883.

It is an interprime number because it is at equal distance from previous prime (38815141) and next prime (38815181).

It is not a de Polignac number, because 38815161 - 2⁵ = 38815129 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (38815141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25360 + ... + 26846.

It is an arithmetic number, because the mean of its divisors is an integer number (2035584).

Almost surely, 2^38815161 is an apocalyptic number.

It is an amenable number.

38815161 is a deficient number, since it is larger than the sum of its proper divisors (26323527).

38815161 is a wasteful number, since it uses less digits than its factorization.

38815161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1621.

The product of its digits is 5760, while the sum is 33.

The square root of 38815161 is about 6230.1814580315. The cubic root of 38815161 is about 338.5845451360.

Subtracting from 38815161 its reverse (16151883), we obtain a triangular number (22663278 = T₆₇₃₂).

The spelling of 38815161 in words is "thirty-eight million, eight hundred fifteen thousand, one hundred sixty-one".