18446413120 has 28 divisors (see below), whose sum is σ = 43925522004. Its totient is φ = 7378565120.

The previous prime is 18446413081. The next prime is 18446413123. The reversal of 18446413120 is 2131464481.

It can be written as a sum of positive squares in 2 ways, for example, as 10726330624 + 7720082496 = 103568^2 + 87864^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18446413123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28822201 + ... + 28822840.

It is an arithmetic number, because the mean of its divisors is an integer number (1568768643).

Almost surely, 2^18446413120 is an apocalyptic number.

18446413120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18446413120 is an abundant number, since it is smaller than the sum of its proper divisors (25479108884).

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

18446413120 is an equidigital number, since it uses as much as digits as its factorization.

18446413120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57645058 (or 57645048 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The spelling of 18446413120 in words is "eighteen billion, four hundred forty-six million, four hundred thirteen thousand, one hundred twenty".