36165978 has 24 divisors (see below), whose sum is σ = 79124448. Its totient is φ = 11937672.

The previous prime is 36165971. The next prime is 36166001. The reversal of 36165978 is 87956163.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (36165971) 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, 7900 + ... + 11607.

It is an arithmetic number, because the mean of its divisors is an integer number (3296852).

Almost surely, 2^36165978 is an apocalyptic number.

36165978 is an abundant number, since it is smaller than the sum of its proper divisors (42958470).

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

36165978 is a wasteful number, since it uses less digits than its factorization.

36165978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19618 (or 19615 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 36165978 is about 6013.8155941133. The cubic root of 36165978 is about 330.6993981990.

The spelling of 36165978 in words is "thirty-six million, one hundred sixty-five thousand, nine hundred seventy-eight".