18790481920 has 120 divisors (see below), whose sum is σ = 51539607504. Its totient is φ = 6442450944.

The previous prime is 18790481911. The next prime is 18790481959. The reversal of 18790481920 is 2918409781.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (3) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2684354557 + ... + 2684354563.

Almost surely, 2^18790481920 is an apocalyptic number.

18790481920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18790481920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25769803752).

18790481920 is an abundant number, since it is smaller than the sum of its proper divisors (32749125584).

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

18790481920 is an frugal number, since it uses more digits than its factorization.

18790481920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70 (or 14 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 49.

The spelling of 18790481920 in words is "eighteen billion, seven hundred ninety million, four hundred eighty-one thousand, nine hundred twenty".