74347731239 has 4 divisors (see below), whose sum is σ = 74601478056. Its totient is φ = 74093984424.

The previous prime is 74347731233. The next prime is 74347731343. The reversal of 74347731239 is 93213774347.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 74347731239 - 2²⁸ = 74079295783 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 (74347731233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126872969 + ... + 126873554.

It is an arithmetic number, because the mean of its divisors is an integer number (18650369514).

Almost surely, 2^74347731239 is an apocalyptic number.

74347731239 is a deficient number, since it is larger than the sum of its proper divisors (253746817).

74347731239 is a wasteful number, since it uses less digits than its factorization.

74347731239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253746816.

The product of its digits is 2667168, while the sum is 50.

The spelling of 74347731239 in words is "seventy-four billion, three hundred forty-seven million, seven hundred thirty-one thousand, two hundred thirty-nine".