163455864 has 128 divisors (see below), whose sum is σ = 486017280. Its totient is φ = 45158400.

The previous prime is 163455863. The next prime is 163455881. The reversal of 163455864 is 468554361.

163455864 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163455863) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 332659 + ... + 333149.

It is an arithmetic number, because the mean of its divisors is an integer number (3797010).

Almost surely, 2^163455864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163455864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243008640).

163455864 is an abundant number, since it is smaller than the sum of its proper divisors (322561416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163455864 is a wasteful number, since it uses less digits than its factorization.

163455864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621 (or 617 counting only the distinct ones).

The product of its digits is 345600, while the sum is 42.

The square root of 163455864 is about 12784.9858818850. The cubic root of 163455864 is about 546.7643228935.

The spelling of 163455864 in words is "one hundred sixty-three million, four hundred fifty-five thousand, eight hundred sixty-four".