36931457 has 2 divisors, whose sum is σ = 36931458. Its totient is φ = 36931456.

The previous prime is 36931423. The next prime is 36931469. The reversal of 36931457 is 75413963.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36590401 + 341056 = 6049^2 + 584^2 .

It is a cyclic number.

It is not a de Polignac number, because 36931457 - 2¹² = 36927361 is a prime.

It is a super-2 number, since 2×36931457² = 2727865032285698, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 36931457.

It is not a weakly prime, because it can be changed into another prime (36931057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18465728 + 18465729.

It is an arithmetic number, because the mean of its divisors is an integer number (18465729).

Almost surely, 2^36931457 is an apocalyptic number.

It is an amenable number.

36931457 is a deficient number, since it is larger than the sum of its proper divisors (1).

36931457 is an equidigital number, since it uses as much as digits as its factorization.

36931457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 38.

The square root of 36931457 is about 6077.1257186272. The cubic root of 36931457 is about 333.0162917718.

The spelling of 36931457 in words is "thirty-six million, nine hundred thirty-one thousand, four hundred fifty-seven".