18342091908 has 36 divisors (see below), whose sum is σ = 52988266240. Its totient is φ = 5240597616.

The previous prime is 18342091853. The next prime is 18342091913. The reversal of 18342091908 is 80919024381.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36392788 + ... + 36393291.

Almost surely, 2^18342091908 is an apocalyptic number.

18342091908 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18342091908 is an abundant number, since it is smaller than the sum of its proper divisors (34646174332).

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

18342091908 is a wasteful number, since it uses less digits than its factorization.

18342091908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72786096 (or 72786091 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The spelling of 18342091908 in words is "eighteen billion, three hundred forty-two million, ninety-one thousand, nine hundred eight".