36938181 has 16 divisors (see below), whose sum is σ = 56576000. Its totient is φ = 20999088.

The previous prime is 36938177. The next prime is 36938197. The reversal of 36938181 is 18183963.

It is not a de Polignac number, because 36938181 - 2² = 36938177 is a prime.

It is a super-2 number, since 2×36938181² = 2728858431177522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36938101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 241 + ... + 8598.

It is an arithmetic number, because the mean of its divisors is an integer number (3536000).

Almost surely, 2^36938181 is an apocalyptic number.

It is an amenable number.

36938181 is a deficient number, since it is larger than the sum of its proper divisors (19637819).

36938181 is a wasteful number, since it uses less digits than its factorization.

36938181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9048.

The product of its digits is 31104, while the sum is 39.

The square root of 36938181 is about 6077.6789155071. The cubic root of 36938181 is about 333.0365009723.

The spelling of 36938181 in words is "thirty-six million, nine hundred thirty-eight thousand, one hundred eighty-one".