974874981 has 4 divisors (see below), whose sum is σ = 1299833312. Its totient is φ = 649916652.

The previous prime is 974874961. The next prime is 974874983. The reversal of 974874981 is 189478479.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 974874981 - 2¹⁴ = 974858597 is a prime.

It is a super-2 number, since 2×974874981² = 1900762457159500722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (974874983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162479161 + ... + 162479166.

It is an arithmetic number, because the mean of its divisors is an integer number (324958328).

Almost surely, 2^974874981 is an apocalyptic number.

It is an amenable number.

974874981 is a deficient number, since it is larger than the sum of its proper divisors (324958331).

974874981 is a wasteful number, since it uses less digits than its factorization.

974874981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324958330.

The product of its digits is 4064256, while the sum is 57.

The square root of 974874981 is about 31222.9880216484. The cubic root of 974874981 is about 991.5538571799.

The spelling of 974874981 in words is "nine hundred seventy-four million, eight hundred seventy-four thousand, nine hundred eighty-one".