18794471472 has 140 divisors (see below), whose sum is σ = 62396222160. Its totient is φ = 5369825664.

The previous prime is 18794471461. The next prime is 18794471503. The reversal of 18794471472 is 27417449781.

18794471472 is a `hidden beast` number, since 1 + 87 + 94 + 4 + 7 + 1 + 472 = 666.

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

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 33447 + ... + 196742.

Almost surely, 2^18794471472 is an apocalyptic number.

18794471472 is a gapful number since it is divisible by the number (12) 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 18794471472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31198111080).

18794471472 is an abundant number, since it is smaller than the sum of its proper divisors (43601750688).

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

18794471472 is an equidigital number, since it uses as much as digits as its factorization.

18794471472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230222 (or 230201 counting only the distinct ones).

The product of its digits is 3161088, while the sum is 54.

The spelling of 18794471472 in words is "eighteen billion, seven hundred ninety-four million, four hundred seventy-one thousand, four hundred seventy-two".