18980465020 has 48 divisors (see below), whose sum is σ = 43505280000. Its totient is φ = 6898374720.

The previous prime is 18980464999. The next prime is 18980465081. The reversal of 18980465020 is 2056408981.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 418201 + ... + 461359.

It is an arithmetic number, because the mean of its divisors is an integer number (906360000).

Almost surely, 2^18980465020 is an apocalyptic number.

18980465020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18980465020 is an abundant number, since it is smaller than the sum of its proper divisors (24524814980).

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

18980465020 is a wasteful number, since it uses less digits than its factorization.

18980465020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45178 (or 45176 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 43.

The spelling of 18980465020 in words is "eighteen billion, nine hundred eighty million, four hundred sixty-five thousand, twenty".