163445900 has 36 divisors (see below), whose sum is σ = 355362672. Its totient is φ = 65252160.

The previous prime is 163445899. The next prime is 163445903. The reversal of 163445900 is 9544361.

It is not an unprimeable number, because it can be changed into a prime (163445903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64049 + ... + 66551.

Almost surely, 2^163445900 is an apocalyptic number.

163445900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163445900 is an abundant number, since it is smaller than the sum of its proper divisors (191916772).

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

163445900 is a wasteful number, since it uses less digits than its factorization.

163445900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3170 (or 3163 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 163445900 is about 12784.5962001152. The cubic root of 163445900 is about 546.7532127171.

The spelling of 163445900 in words is "one hundred sixty-three million, four hundred forty-five thousand, nine hundred".