163800080 has 20 divisors (see below), whose sum is σ = 380835372. Its totient is φ = 65520000.

The previous prime is 163800071. The next prime is 163800097. The reversal of 163800080 is 80008361.

It can be written as a sum of positive squares in 2 ways, for example, as 126247696 + 37552384 = 11236^2 + 6128^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1023671 + ... + 1023830.

Almost surely, 2^163800080 is an apocalyptic number.

163800080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163800080 is an abundant number, since it is smaller than the sum of its proper divisors (217035292).

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

163800080 is a wasteful number, since it uses less digits than its factorization.

163800080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2047514 (or 2047508 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 163800080 is about 12798.4405300021. The cubic root of 163800080 is about 547.1478577643.

The spelling of 163800080 in words is "one hundred sixty-three million, eight hundred thousand, eighty".