18192931648 has 28 divisors (see below), whose sum is σ = 36107168832. Its totient is φ = 9095062400.

The previous prime is 18192931639. The next prime is 18192931651. The reversal of 18192931648 is 84613929181.

It is a junction number, because it is equal to n+sod(n) for n = 18192931595 and 18192931604.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 488073 + ... + 524023.

It is an arithmetic number, because the mean of its divisors is an integer number (1289541744).

Almost surely, 2^18192931648 is an apocalyptic number.

It is an amenable number.

18192931648 is a deficient number, since it is larger than the sum of its proper divisors (17914237184).

18192931648 is an equidigital number, since it uses as much as digits as its factorization.

18192931648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43870 (or 43860 counting only the distinct ones).

The product of its digits is 746496, while the sum is 52.

The spelling of 18192931648 in words is "eighteen billion, one hundred ninety-two million, nine hundred thirty-one thousand, six hundred forty-eight".