18350001685 has 16 divisors (see below), whose sum is σ = 22247913600. Its totient is φ = 14528190400.

The previous prime is 18350001661. The next prime is 18350001707. The reversal of 18350001685 is 58610005381.

It is not a de Polignac number, because 18350001685 - 2⁵ = 18350001653 is a prime.

It is a congruent number.

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, 1356264 + ... + 1369726.

It is an arithmetic number, because the mean of its divisors is an integer number (1390494600).

Almost surely, 2^18350001685 is an apocalyptic number.

It is an amenable number.

18350001685 is a deficient number, since it is larger than the sum of its proper divisors (3897911915).

18350001685 is a wasteful number, since it uses less digits than its factorization.

18350001685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16268.

The product of its (nonzero) digits is 28800, while the sum is 37.

The spelling of 18350001685 in words is "eighteen billion, three hundred fifty million, one thousand, six hundred eighty-five".