18698345943 has 8 divisors (see below), whose sum is σ = 24935275008. Its totient is φ = 12463490424.

The previous prime is 18698345933. The next prime is 18698345957. The reversal of 18698345943 is 34954389681.

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

It is not a de Polignac number, because 18698345943 - 2¹⁰ = 18698344919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18698345933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 497221 + ... + 533502.

It is an arithmetic number, because the mean of its divisors is an integer number (3116909376).

Almost surely, 2^18698345943 is an apocalyptic number.

18698345943 is a deficient number, since it is larger than the sum of its proper divisors (6236929065).

18698345943 is a wasteful number, since it uses less digits than its factorization.

18698345943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1036773.

The product of its digits is 22394880, while the sum is 60.

The spelling of 18698345943 in words is "eighteen billion, six hundred ninety-eight million, three hundred forty-five thousand, nine hundred forty-three".