18948338980 has 48 divisors (see below), whose sum is σ = 39981666816. Its totient is φ = 7543198080.

The previous prime is 18948338977. The next prime is 18948338989. The reversal of 18948338980 is 8983384981.

It is not an unprimeable number, because it can be changed into a prime (18948338989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4607125 + ... + 4611235.

It is an arithmetic number, because the mean of its divisors is an integer number (832951392).

Almost surely, 2^18948338980 is an apocalyptic number.

18948338980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18948338980 is an abundant number, since it is smaller than the sum of its proper divisors (21033327836).

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

18948338980 is a wasteful number, since it uses less digits than its factorization.

18948338980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5164 (or 5162 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 61.

The spelling of 18948338980 in words is "eighteen billion, nine hundred forty-eight million, three hundred thirty-eight thousand, nine hundred eighty".