180395572900 has 27 divisors (see below), whose sum is σ = 391467610051. Its totient is φ = 72156530240.

The previous prime is 180395572867. The next prime is 180395572901. The reversal of 180395572900 is 9275593081.

The square root of 180395572900 is 424730.

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 42314958436 + 138080614464 = 205706^2 + 371592^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180395572901) 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 8 ways as a sum of consecutive naturals, for example, 4226064 + ... + 4268536.

Almost surely, 2^180395572900 is an apocalyptic number.

180395572900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

180395572900 is the 424730-th square number.

It is an amenable number.

180395572900 is an abundant number, since it is smaller than the sum of its proper divisors (211072037151).

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

180395572900 is an frugal number, since it uses more digits than its factorization.

180395572900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84960 (or 42480 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 49.

Multiplying 180395572900 by its sum of digits (49), we get a square (8839383072100 = 2973110²).

The spelling of 180395572900 in words is "one hundred eighty billion, three hundred ninety-five million, five hundred seventy-two thousand, nine hundred".