18324747332 has 24 divisors (see below), whose sum is σ = 32390127000. Its totient is φ = 9070569216.

The previous prime is 18324747319. The next prime is 18324747341. The reversal of 18324747332 is 23374742381.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 14868736 + 18309878596 = 3856^2 + 135314^2 .

It is a super-2 number, since 2×18324747332² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 511544 + ... + 546192.

It is an arithmetic number, because the mean of its divisors is an integer number (1349588625).

Almost surely, 2^18324747332 is an apocalyptic number.

It is an amenable number.

18324747332 is a deficient number, since it is larger than the sum of its proper divisors (14065379668).

18324747332 is a wasteful number, since it uses less digits than its factorization.

18324747332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35975 (or 35973 counting only the distinct ones).

The product of its digits is 677376, while the sum is 44.

Multiplying 18324747332 by its sum of digits (44), we get a palindrome (806288882608).

The spelling of 18324747332 in words is "eighteen billion, three hundred twenty-four million, seven hundred forty-seven thousand, three hundred thirty-two".