18491744332 has 36 divisors (see below), whose sum is σ = 34018986960. Its totient is φ = 8778504064.

The previous prime is 18491744329. The next prime is 18491744347. The reversal of 18491744332 is 23344719481.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1721394 + ... + 1732102.

It is an arithmetic number, because the mean of its divisors is an integer number (944971860).

Almost surely, 2^18491744332 is an apocalyptic number.

It is an amenable number.

18491744332 is a deficient number, since it is larger than the sum of its proper divisors (15527242628).

18491744332 is a wasteful number, since it uses less digits than its factorization.

18491744332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11010 (or 10871 counting only the distinct ones).

The product of its digits is 580608, while the sum is 46.

The spelling of 18491744332 in words is "eighteen billion, four hundred ninety-one million, seven hundred forty-four thousand, three hundred thirty-two".