18350337040 has 80 divisors (see below), whose sum is σ = 49427515008. Its totient is φ = 6205344768.

The previous prime is 18350337037. The next prime is 18350337073. The reversal of 18350337040 is 4073305381.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 18350336987 and 18350337005.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183562 + ... + 265321.

Almost surely, 2^18350337040 is an apocalyptic number.

18350337040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18350337040 is an abundant number, since it is smaller than the sum of its proper divisors (31077177968).

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

18350337040 is a wasteful number, since it uses less digits than its factorization.

18350337040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448976 (or 448970 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The spelling of 18350337040 in words is "eighteen billion, three hundred fifty million, three hundred thirty-seven thousand, forty".