36873991 has 32 divisors (see below), whose sum is σ = 49102848. Its totient is φ = 26838240.

The previous prime is 36873971. The next prime is 36874009. The reversal of 36873991 is 19937863.

It is not a de Polignac number, because 36873991 - 2⁹ = 36873479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36873931) 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, 83016 + ... + 83458.

It is an arithmetic number, because the mean of its divisors is an integer number (1534464).

Almost surely, 2^36873991 is an apocalyptic number.

36873991 is a deficient number, since it is larger than the sum of its proper divisors (12228857).

36873991 is a wasteful number, since it uses less digits than its factorization.

36873991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531.

The product of its digits is 244944, while the sum is 46.

The square root of 36873991 is about 6072.3958204320. The cubic root of 36873991 is about 332.8434756933.

The spelling of 36873991 in words is "thirty-six million, eight hundred seventy-three thousand, nine hundred ninety-one".