74631977938 has 16 divisors (see below), whose sum is σ = 133503166080. Its totient is φ = 30594475296.

The previous prime is 74631977923. The next prime is 74631977939. The reversal of 74631977938 is 83977913647.

It is a self number, because there is not a number n which added to its sum of digits gives 74631977938.

It is not an unprimeable number, because it can be changed into a prime (74631977939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115887843 + ... + 115888486.

It is an arithmetic number, because the mean of its divisors is an integer number (8343947880).

Almost surely, 2^74631977938 is an apocalyptic number.

74631977938 is a deficient number, since it is larger than the sum of its proper divisors (58871188142).

74631977938 is a wasteful number, since it uses less digits than its factorization.

74631977938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231776361.

The product of its digits is 48009024, while the sum is 64.

The spelling of 74631977938 in words is "seventy-four billion, six hundred thirty-one million, nine hundred seventy-seven thousand, nine hundred thirty-eight".