163643157 has 12 divisors (see below), whose sum is σ = 236693964. Its totient is φ = 108947520.

The previous prime is 163643153. The next prime is 163643159. The reversal of 163643157 is 751346361.

163643157 is a `hidden beast` number, since 1 + 6 + 3 + 643 + 1 + 5 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 62821476 + 100821681 = 7926^2 + 10041^2 .

It is not a de Polignac number, because 163643157 - 2² = 163643153 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163643153) 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, 5098 + ... + 18795.

It is an arithmetic number, because the mean of its divisors is an integer number (19724497).

Almost surely, 2^163643157 is an apocalyptic number.

It is an amenable number.

163643157 is a deficient number, since it is larger than the sum of its proper divisors (73050807).

163643157 is a wasteful number, since it uses less digits than its factorization.

163643157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24660 (or 24657 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 163643157 is about 12792.3085094130. The cubic root of 163643157 is about 546.9730765791.

The spelling of 163643157 in words is "one hundred sixty-three million, six hundred forty-three thousand, one hundred fifty-seven".