163974772 has 12 divisors (see below), whose sum is σ = 309029476. Its totient is φ = 75680640.

The previous prime is 163974761. The next prime is 163974773. The reversal of 163974772 is 277479361.

163974772 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 50637456 + 113337316 = 7116^2 + 10646^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163974773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1576629 + ... + 1576732.

Almost surely, 2^163974772 is an apocalyptic number.

It is an amenable number.

163974772 is a deficient number, since it is larger than the sum of its proper divisors (145054704).

163974772 is a wasteful number, since it uses less digits than its factorization.

163974772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3153378 (or 3153376 counting only the distinct ones).

The product of its digits is 444528, while the sum is 46.

The square root of 163974772 is about 12805.2634490666. The cubic root of 163974772 is about 547.3422988462.

The spelling of 163974772 in words is "one hundred sixty-three million, nine hundred seventy-four thousand, seven hundred seventy-two".