18384746680 has 32 divisors (see below), whose sum is σ = 41371885440. Its totient is φ = 7352795520.

The previous prime is 18384746659. The next prime is 18384746683. The reversal of 18384746680 is 8664748381.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18384746683) 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 7 ways as a sum of consecutive naturals, for example, 268345 + ... + 329815.

It is an arithmetic number, because the mean of its divisors is an integer number (1292871420).

Almost surely, 2^18384746680 is an apocalyptic number.

18384746680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18384746680 is an abundant number, since it is smaller than the sum of its proper divisors (22987138760).

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

18384746680 is a wasteful number, since it uses less digits than its factorization.

18384746680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68959 (or 68955 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 55.

The spelling of 18384746680 in words is "eighteen billion, three hundred eighty-four million, seven hundred forty-six thousand, six hundred eighty".