74814831529 has 9 divisors (see below), whose sum is σ = 76607216919. Its totient is φ = 73063463760.

The previous prime is 74814831499. The next prime is 74814831541. The reversal of 74814831529 is 92513841847.

The square root of 74814831529 is 273523.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 18475061929 + 56339769600 = 135923^2 + 237360^2 .

It is not a de Polignac number, because 74814831529 - 2⁹ = 74814831017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74814831629) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 11758309 + ... + 11764669.

It is an arithmetic number, because the mean of its divisors is an integer number (8511912991).

Almost surely, 2^74814831529 is an apocalyptic number.

74814831529 is the 273523-rd square number.

74814831529 is the 136762-nd centered octagonal number.

It is an amenable number.

74814831529 is a deficient number, since it is larger than the sum of its proper divisors (1792385390).

74814831529 is an frugal number, since it uses more digits than its factorization.

74814831529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12808 (or 6404 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 52.

The spelling of 74814831529 in words is "seventy-four billion, eight hundred fourteen million, eight hundred thirty-one thousand, five hundred twenty-nine".