36381986 has 8 divisors (see below), whose sum is σ = 55467804. Its totient is φ = 17892720.

The previous prime is 36381907. The next prime is 36381991. The reversal of 36381986 is 68918363.

It can be written as a sum of positive squares in 2 ways, for example, as 36372961 + 9025 = 6031^2 + 95^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148985 + ... + 149228.

Almost surely, 2^36381986 is an apocalyptic number.

36381986 is a deficient number, since it is larger than the sum of its proper divisors (19085818).

36381986 is a wasteful number, since it uses less digits than its factorization.

36381986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298276.

The product of its digits is 186624, while the sum is 44.

The square root of 36381986 is about 6031.7481711358. The cubic root of 36381986 is about 331.3564795459.

The spelling of 36381986 in words is "thirty-six million, three hundred eighty-one thousand, nine hundred eighty-six".