18415306980 has 144 divisors (see below), whose sum is σ = 63873264000. Its totient is φ = 4207002624.

The previous prime is 18415306951. The next prime is 18415306999. The reversal of 18415306980 is 8960351481.

18415306980 is a `hidden beast` number, since 18 + 41 + 530 + 69 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4406652 + ... + 4410828.

Almost surely, 2^18415306980 is an apocalyptic number.

18415306980 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 18415306980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31936632000).

18415306980 is an abundant number, since it is smaller than the sum of its proper divisors (45457957020).

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

18415306980 is a wasteful number, since it uses less digits than its factorization.

18415306980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7698 (or 7693 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 18415306980 in words is "eighteen billion, four hundred fifteen million, three hundred six thousand, nine hundred eighty".