36907981 has 32 divisors (see below), whose sum is σ = 44323200. Its totient is φ = 30401280.

The previous prime is 36907963. The next prime is 36907987. The reversal of 36907981 is 18970963.

It is not a de Polignac number, because 36907981 - 2⁹ = 36907469 is a prime.

It is a super-2 number, since 2×36907981² = 2724398122992722, 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 (36907987) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 625530 + ... + 625588.

It is an arithmetic number, because the mean of its divisors is an integer number (1385100).

Almost surely, 2^36907981 is an apocalyptic number.

It is an amenable number.

36907981 is a deficient number, since it is larger than the sum of its proper divisors (7415219).

36907981 is a wasteful number, since it uses less digits than its factorization.

36907981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 36907981 is about 6075.1939063704. The cubic root of 36907981 is about 332.9457146522.

The spelling of 36907981 in words is "thirty-six million, nine hundred seven thousand, nine hundred eighty-one".