163128475 has 12 divisors (see below), whose sum is σ = 202437936. Its totient is φ = 130400480.

The previous prime is 163128473. The next prime is 163128529. The reversal of 163128475 is 574821361.

163128475 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 163128475 - 2¹ = 163128473 is a prime.

It is a super-2 number, since 2×163128475² = 53221798711651250, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163128473) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59229 + ... + 61921.

It is an arithmetic number, because the mean of its divisors is an integer number (16869828).

Almost surely, 2^163128475 is an apocalyptic number.

163128475 is a deficient number, since it is larger than the sum of its proper divisors (39309461).

163128475 is a wasteful number, since it uses less digits than its factorization.

163128475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5126 (or 5121 counting only the distinct ones).

The product of its digits is 40320, while the sum is 37.

The square root of 163128475 is about 12772.1758130712. The cubic root of 163128475 is about 546.3990371943.

The spelling of 163128475 in words is "one hundred sixty-three million, one hundred twenty-eight thousand, four hundred seventy-five".