18348919368 has 32 divisors (see below), whose sum is σ = 49400937600. Its totient is φ = 5645821248.

The previous prime is 18348919357. The next prime is 18348919387. The reversal of 18348919368 is 86391984381.

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, 29405008 + ... + 29405631.

It is an arithmetic number, because the mean of its divisors is an integer number (1543779300).

Almost surely, 2^18348919368 is an apocalyptic number.

It is an amenable number.

18348919368 is an abundant number, since it is smaller than the sum of its proper divisors (31052018232).

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

18348919368 is a wasteful number, since it uses less digits than its factorization.

18348919368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58810661 (or 58810657 counting only the distinct ones).

The product of its digits is 8957952, while the sum is 60.

The spelling of 18348919368 in words is "eighteen billion, three hundred forty-eight million, nine hundred nineteen thousand, three hundred sixty-eight".