18900000680 has 128 divisors (see below), whose sum is σ = 48542457600. Its totient is φ = 6555648000.

The previous prime is 18900000677. The next prime is 18900000683. The reversal of 18900000680 is 8600000981.

It is an interprime number because it is at equal distance from previous prime (18900000677) and next prime (18900000683).

It is not an unprimeable number, because it can be changed into a prime (18900000683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3934280 + ... + 3939080.

It is an arithmetic number, because the mean of its divisors is an integer number (379237950).

Almost surely, 2^18900000680 is an apocalyptic number.

18900000680 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 18900000680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24271228800).

18900000680 is an abundant number, since it is smaller than the sum of its proper divisors (29642456920).

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

18900000680 is a wasteful number, since it uses less digits than its factorization.

18900000680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5235 (or 5231 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 32.

The spelling of 18900000680 in words is "eighteen billion, nine hundred million, six hundred eighty", and thus it is an aban number.