18474654464 has 72 divisors (see below), whose sum is σ = 42235253760. Its totient is φ = 7900812288.

The previous prime is 18474654449. The next prime is 18474654467. The reversal of 18474654464 is 46445647481.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18474654467) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 847607 + ... + 869129.

Almost surely, 2^18474654464 is an apocalyptic number.

18474654464 is a gapful number since it is divisible by the number (14) 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 18474654464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21117626880).

18474654464 is an abundant number, since it is smaller than the sum of its proper divisors (23760599296).

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

18474654464 is an equidigital number, since it uses as much as digits as its factorization.

18474654464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22025 (or 22011 counting only the distinct ones).

The product of its digits is 10321920, while the sum is 53.

The spelling of 18474654464 in words is "eighteen billion, four hundred seventy-four million, six hundred fifty-four thousand, four hundred sixty-four".