18433492900 has 27 divisors (see below), whose sum is σ = 40003626019. Its totient is φ = 7372854080.

The previous prime is 18433492879. The next prime is 18433492933. The reversal of 18433492900 is 929433481.

The square root of 18433492900 is 135770.

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 3551444836 + 14882048064 = 59594^2 + 121992^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1350912 + ... + 1364488.

Almost surely, 2^18433492900 is an apocalyptic number.

18433492900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18433492900 is the 135770-th square number.

It is an amenable number.

18433492900 is an abundant number, since it is smaller than the sum of its proper divisors (21570133119).

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

18433492900 is an frugal number, since it uses more digits than its factorization.

18433492900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27168 (or 13584 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 43.

The spelling of 18433492900 in words is "eighteen billion, four hundred thirty-three million, four hundred ninety-two thousand, nine hundred".