18338951740685 has 16 divisors (see below), whose sum is σ = 22028260970496. Its totient is φ = 14656817040768.

The previous prime is 18338951740597. The next prime is 18338951740693. The reversal of 18338951740685 is 58604715983381.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18338951740685 is a prime.

It is a Duffinian number.

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, 104171657 + ... + 104347553.

It is an arithmetic number, because the mean of its divisors is an integer number (1376766310656).

Almost surely, 2^{18338951740685} is an apocalyptic number.

It is an amenable number.

18338951740685 is a deficient number, since it is larger than the sum of its proper divisors (3689309229811).

18338951740685 is a wasteful number, since it uses less digits than its factorization.

18338951740685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196172.

The product of its (nonzero) digits is 174182400, while the sum is 68.

The spelling of 18338951740685 in words is "eighteen trillion, three hundred thirty-eight billion, nine hundred fifty-one million, seven hundred forty thousand, six hundred eighty-five".