163595980900 has 81 divisors (see below), whose sum is σ = 390316366027. Its totient is φ = 59473268800.

The previous prime is 163595980861. The next prime is 163595980901. The reversal of 163595980900 is 9089595361.

The square root of 163595980900 is 404470.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 5102816356 + 158493164544 = 71434^2 + 398112^2 .

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163595980901) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 44489862 + ... + 44493538.

Almost surely, 2^163595980900 is an apocalyptic number.

163595980900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

163595980900 is the 404470-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163595980900

163595980900 is an abundant number, since it is smaller than the sum of its proper divisors (226720385127).

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

163595980900 is an equidigital number, since it uses as much as digits as its factorization.

163595980900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7390 (or 3695 counting only the distinct ones).

The product of its (nonzero) digits is 2624400, while the sum is 55.

The spelling of 163595980900 in words is "one hundred sixty-three billion, five hundred ninety-five million, nine hundred eighty thousand, nine hundred".