163420164 has 36 divisors (see below), whose sum is σ = 414526476. Its totient is φ = 54283968.

The previous prime is 163420163. The next prime is 163420177. The reversal of 163420164 is 461024361.

163420164 is a `hidden beast` number, since 1 + 634 + 20 + 1 + 6 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 80245764 + 83174400 = 8958^2 + 9120^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (163420163) 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, 2802 + ... + 18294.

Almost surely, 2^163420164 is an apocalyptic number.

It is an amenable number.

163420164 is an abundant number, since it is smaller than the sum of its proper divisors (251106312).

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

163420164 is a wasteful number, since it uses less digits than its factorization.

163420164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15796 (or 15791 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 163420164 is about 12783.5896367178. The cubic root of 163420164 is about 546.7245141706.

The spelling of 163420164 in words is "one hundred sixty-three million, four hundred twenty thousand, one hundred sixty-four".