74318537 has 2 divisors, whose sum is σ = 74318538. Its totient is φ = 74318536.

The previous prime is 74318521. The next prime is 74318579. The reversal of 74318537 is 73581347.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72403081 + 1915456 = 8509^2 + 1384^2 .

It is a cyclic number.

It is not a de Polignac number, because 74318537 - 2⁴ = 74318521 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74318537.

It is not a weakly prime, because it can be changed into another prime (74318597) 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, 37159268 + 37159269.

It is an arithmetic number, because the mean of its divisors is an integer number (37159269).

Almost surely, 2^74318537 is an apocalyptic number.

It is an amenable number.

74318537 is a deficient number, since it is larger than the sum of its proper divisors (1).

74318537 is an equidigital number, since it uses as much as digits as its factorization.

74318537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70560, while the sum is 38.

The square root of 74318537 is about 8620.8199726012. The cubic root of 74318537 is about 420.4351819625.

The spelling of 74318537 in words is "seventy-four million, three hundred eighteen thousand, five hundred thirty-seven".