18694113480 has 144 divisors (see below), whose sum is σ = 70675261020. Its totient is φ = 4272936192.

The previous prime is 18694113419. The next prime is 18694113481. The reversal of 18694113480 is 8431149681.

18694113480 is a `hidden beast` number, since 1 + 86 + 94 + 1 + 1 + 3 + 480 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 18369465156 + 324648324 = 135534^2 + 18018^2 .

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

It is not an unprimeable number, because it can be changed into a prime (18694113481) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 512239 + ... + 547518.

Almost surely, 2^18694113480 is an apocalyptic number.

18694113480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18694113480 is an abundant number, since it is smaller than the sum of its proper divisors (51981147540).

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

18694113480 is a wasteful number, since it uses less digits than its factorization.

18694113480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059788 (or 1059774 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 18694113480 in words is "eighteen billion, six hundred ninety-four million, one hundred thirteen thousand, four hundred eighty".