18345837694 has 8 divisors (see below), whose sum is σ = 27528264288. Its totient is φ = 9169749600.

The previous prime is 18345837677. The next prime is 18345837707. The reversal of 18345837694 is 49673854381.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1577382 + ... + 1588969.

It is an arithmetic number, because the mean of its divisors is an integer number (3441033036).

Almost surely, 2^18345837694 is an apocalyptic number.

18345837694 is a deficient number, since it is larger than the sum of its proper divisors (9182426594).

18345837694 is a wasteful number, since it uses less digits than its factorization.

18345837694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3169250.

The product of its digits is 17418240, while the sum is 58.

The spelling of 18345837694 in words is "eighteen billion, three hundred forty-five million, eight hundred thirty-seven thousand, six hundred ninety-four".