18462905680 has 80 divisors (see below), whose sum is σ = 44679818880. Its totient is φ = 7086610944.

The previous prime is 18462905639. The next prime is 18462905737. The reversal of 18462905680 is 8650926481.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×18462905680² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 353749 + ... + 402571.

It is an arithmetic number, because the mean of its divisors is an integer number (558497736).

Almost surely, 2^18462905680 is an apocalyptic number.

18462905680 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 18462905680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22339909440).

18462905680 is an abundant number, since it is smaller than the sum of its proper divisors (26216913200).

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

18462905680 is a wasteful number, since it uses less digits than its factorization.

18462905680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49028 (or 49022 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 49.

The spelling of 18462905680 in words is "eighteen billion, four hundred sixty-two million, nine hundred five thousand, six hundred eighty".