36861518 has 4 divisors (see below), whose sum is σ = 55292280. Its totient is φ = 18430758.

The previous prime is 36861499. The next prime is 36861521. The reversal of 36861518 is 81516863.

It is a happy number.

36861518 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9215378 + ... + 9215381.

It is an arithmetic number, because the mean of its divisors is an integer number (13823070).

Almost surely, 2^36861518 is an apocalyptic number.

36861518 is a deficient number, since it is larger than the sum of its proper divisors (18430762).

36861518 is a wasteful number, since it uses less digits than its factorization.

36861518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18430761.

The product of its digits is 34560, while the sum is 38.

The square root of 36861518 is about 6071.3687089486. The cubic root of 36861518 is about 332.8059422382.

The spelling of 36861518 in words is "thirty-six million, eight hundred sixty-one thousand, five hundred eighteen".