18748320700 has 72 divisors (see below), whose sum is σ = 41498593920. Its totient is φ = 7349472000.

The previous prime is 18748320691. The next prime is 18748320713. The reversal of 18748320700 is 702384781.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6893941 + ... + 6896659.

It is an arithmetic number, because the mean of its divisors is an integer number (576369360).

Almost surely, 2^18748320700 is an apocalyptic number.

18748320700 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 18748320700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20749296960).

18748320700 is an abundant number, since it is smaller than the sum of its proper divisors (22750273220).

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

18748320700 is a wasteful number, since it uses less digits than its factorization.

18748320700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4087 (or 4080 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 40.

The spelling of 18748320700 in words is "eighteen billion, seven hundred forty-eight million, three hundred twenty thousand, seven hundred".