74988131 has 2 divisors, whose sum is σ = 74988132. Its totient is φ = 74988130.

The previous prime is 74988103. The next prime is 74988149. The reversal of 74988131 is 13188947.

It is a strong prime.

It is an emirp because it is prime and its reverse (13188947) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74988131 is a prime.

It is a super-2 number, since 2×74988131² = 11246439581746322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74988931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37494065 + 37494066.

It is an arithmetic number, because the mean of its divisors is an integer number (37494066).

Almost surely, 2^74988131 is an apocalyptic number.

74988131 is a deficient number, since it is larger than the sum of its proper divisors (1).

74988131 is an equidigital number, since it uses as much as digits as its factorization.

74988131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 41.

The square root of 74988131 is about 8659.5687536967. The cubic root of 74988131 is about 421.6940854721.

The spelling of 74988131 in words is "seventy-four million, nine hundred eighty-eight thousand, one hundred thirty-one".