18694706472 has 128 divisors (see below), whose sum is σ = 59214153600. Its totient is φ = 5413837824.

The previous prime is 18694706467. The next prime is 18694706507. The reversal of 18694706472 is 27460749681.

18694706472 is a `hidden beast` number, since 1 + 86 + 94 + 7 + 0 + 6 + 472 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 148078 + ... + 243549.

It is an arithmetic number, because the mean of its divisors is an integer number (462610575).

Almost surely, 2^18694706472 is an apocalyptic number.

18694706472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18694706472 is an abundant number, since it is smaller than the sum of its proper divisors (40519447128).

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

18694706472 is a wasteful number, since it uses less digits than its factorization.

18694706472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391672 (or 391662 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 54.

The spelling of 18694706472 in words is "eighteen billion, six hundred ninety-four million, seven hundred six thousand, four hundred seventy-two".