18930316080 has 160 divisors (see below), whose sum is σ = 65377690560. Its totient is φ = 4499066880.

The previous prime is 18930316079. The next prime is 18930316081. The reversal of 18930316080 is 8061303981.

It is an interprime number because it is at equal distance from previous prime (18930316079) and next prime (18930316081).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (18930316081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14131 + ... + 195090.

It is an arithmetic number, because the mean of its divisors is an integer number (408610566).

Almost surely, 2^18930316080 is an apocalyptic number.

18930316080 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 18930316080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32688845280).

18930316080 is an abundant number, since it is smaller than the sum of its proper divisors (46447374480).

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

18930316080 is a wasteful number, since it uses less digits than its factorization.

18930316080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209279 (or 209273 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The spelling of 18930316080 in words is "eighteen billion, nine hundred thirty million, three hundred sixteen thousand, eighty".