18133447232 has 14 divisors (see below), whose sum is σ = 35983559478. Its totient is φ = 9066723584.

The previous prime is 18133447219. The next prime is 18133447243. The reversal of 18133447232 is 23274433181.

It can be written as a sum of positive squares in only one way, i.e., 12033212416 + 6100234816 = 109696^2 + 78104^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 141667493 + ... + 141667620.

Almost surely, 2^18133447232 is an apocalyptic number.

It is an amenable number.

18133447232 is a deficient number, since it is larger than the sum of its proper divisors (17850112246).

18133447232 is an equidigital number, since it uses as much as digits as its factorization.

18133447232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283335125 (or 283335115 counting only the distinct ones).

The product of its digits is 96768, while the sum is 38.

The spelling of 18133447232 in words is "eighteen billion, one hundred thirty-three million, four hundred forty-seven thousand, two hundred thirty-two".