36816138 has 24 divisors (see below), whose sum is σ = 82520100. Its totient is φ = 11848704.

The previous prime is 36816119. The next prime is 36816139. The reversal of 36816138 is 83161863.

36816138 is a `hidden beast` number, since 36 + 8 + 1 + 613 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 36759969 + 56169 = 6063^2 + 237^2 .

It is not an unprimeable number, because it can be changed into a prime (36816139) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34743 + ... + 35786.

Almost surely, 2^36816138 is an apocalyptic number.

36816138 is an abundant number, since it is smaller than the sum of its proper divisors (45703962).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

36816138 is a wasteful number, since it uses less digits than its factorization.

36816138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70566 (or 70563 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 36816138 is about 6067.6303447062. The cubic root of 36816138 is about 332.6693143369.

The spelling of 36816138 in words is "thirty-six million, eight hundred sixteen thousand, one hundred thirty-eight".