163331956 has 12 divisors (see below), whose sum is σ = 291912768. Its totient is φ = 79928312.

The previous prime is 163331939. The next prime is 163331957. The reversal of 163331956 is 659133361.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163331957) 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 3 ways as a sum of consecutive naturals, for example, 434206 + ... + 434581.

It is an arithmetic number, because the mean of its divisors is an integer number (24326064).

Almost surely, 2^163331956 is an apocalyptic number.

It is an amenable number.

163331956 is a deficient number, since it is larger than the sum of its proper divisors (128580812).

163331956 is a wasteful number, since it uses less digits than its factorization.

163331956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868838 (or 868836 counting only the distinct ones).

The product of its digits is 43740, while the sum is 37.

The square root of 163331956 is about 12780.1391228734. The cubic root of 163331956 is about 546.6261294219.

The spelling of 163331956 in words is "one hundred sixty-three million, three hundred thirty-one thousand, nine hundred fifty-six".