163456456 has 16 divisors (see below), whose sum is σ = 307076940. Its totient is φ = 81569280.

The previous prime is 163456453. The next prime is 163456507. The reversal of 163456456 is 654654361.

163456456 is digitally balanced in base 2, 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 148011556 + 15444900 = 12166^2 + 3930^2 .

It is not an unprimeable number, because it can be changed into a prime (163456453) 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, 15441 + ... + 23776.

Almost surely, 2^163456456 is an apocalyptic number.

It is an amenable number.

163456456 is a deficient number, since it is larger than the sum of its proper divisors (143620484).

163456456 is a wasteful number, since it uses less digits than its factorization.

163456456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39744 (or 39740 counting only the distinct ones).

The product of its digits is 259200, while the sum is 40.

The square root of 163456456 is about 12785.0090340211. The cubic root of 163456456 is about 546.7649829780.

It can be divided in two parts, 16345 and 6456, that added together give a square (22801 = 151²).

The spelling of 163456456 in words is "one hundred sixty-three million, four hundred fifty-six thousand, four hundred fifty-six".