18454665472 has 36 divisors (see below), whose sum is σ = 37735733196. Its totient is φ = 9002270720.

The previous prime is 18454665433. The next prime is 18454665473. The reversal of 18454665472 is 27456645481.

It can be written as a sum of positive squares in 2 ways, for example, as 9373337856 + 9081327616 = 96816^2 + 95296^2 .

It is a super-4 number, since 4×18454665472⁴ (a number of 42 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (18454665473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 868633 + ... + 889624.

It is an arithmetic number, because the mean of its divisors is an integer number (1048214811).

Almost surely, 2^18454665472 is an apocalyptic number.

It is an amenable number.

18454665472 is an abundant number, since it is smaller than the sum of its proper divisors (19281067724).

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

18454665472 is an equidigital number, since it uses as much as digits as its factorization.

18454665472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1758314 (or 1758300 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 52.

The spelling of 18454665472 in words is "eighteen billion, four hundred fifty-four million, six hundred sixty-five thousand, four hundred seventy-two".