18372342648 has 64 divisors (see below), whose sum is σ = 50321606400. Its totient is φ = 5543463680.

The previous prime is 18372342643. The next prime is 18372342649. The reversal of 18372342648 is 84624327381.

It is a junction number, because it is equal to n+sod(n) for n = 18372342597 and 18372342606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18372342643) 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 15 ways as a sum of consecutive naturals, for example, 87828 + ... + 210851.

It is an arithmetic number, because the mean of its divisors is an integer number (786275100).

Almost surely, 2^18372342648 is an apocalyptic number.

It is an amenable number.

18372342648 is an abundant number, since it is smaller than the sum of its proper divisors (31949263752).

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

18372342648 is a wasteful number, since it uses less digits than its factorization.

18372342648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298932 (or 298928 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 48.

The spelling of 18372342648 in words is "eighteen billion, three hundred seventy-two million, three hundred forty-two thousand, six hundred forty-eight".