74347731238 has 32 divisors (see below), whose sum is σ = 124027200000. Its totient is φ = 33142593120.

The previous prime is 74347731233. The next prime is 74347731343. The reversal of 74347731238 is 83213774347.

It is a junction number, because it is equal to n+sod(n) for n = 74347731191 and 74347731200.

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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115413 + ... + 402511.

It is an arithmetic number, because the mean of its divisors is an integer number (3875850000).

Almost surely, 2^74347731238 is an apocalyptic number.

74347731238 is a deficient number, since it is larger than the sum of its proper divisors (49679468762).

74347731238 is a wasteful number, since it uses less digits than its factorization.

74347731238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287340.

The product of its digits is 2370816, while the sum is 49.

The spelling of 74347731238 in words is "seventy-four billion, three hundred forty-seven million, seven hundred thirty-one thousand, two hundred thirty-eight".