18630694080 has 168 divisors, whose sum is σ = 64507713504. Its totient is φ = 4935168000.

The previous prime is 18630694079. The next prime is 18630694099. The reversal of 18630694080 is 8049603681.

18630694080 is a `hidden beast` number, since 1 + 8 + 630 + 6 + 9 + 4 + 0 + 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 23 ways as a sum of consecutive naturals, for example, 413460 + ... + 456300.

Almost surely, 2^18630694080 is an apocalyptic number.

18630694080 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 18630694080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32253856752).

18630694080 is an abundant number, since it is smaller than the sum of its proper divisors (45877019424).

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

18630694080 is a wasteful number, since it uses less digits than its factorization.

18630694080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43015 (or 43002 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 18630694080 in words is "eighteen billion, six hundred thirty million, six hundred ninety-four thousand, eighty".