18023965943 has 8 divisors (see below), whose sum is σ = 18651610800. Its totient is φ = 17396729728.

The previous prime is 18023965933. The next prime is 18023965969. The reversal of 18023965943 is 34956932081.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-18023965943 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18023965891 and 18023965900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18023965903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11021 + ... + 190182.

It is an arithmetic number, because the mean of its divisors is an integer number (2331451350).

Almost surely, 2^18023965943 is an apocalyptic number.

18023965943 is a deficient number, since it is larger than the sum of its proper divisors (627644857).

18023965943 is a wasteful number, since it uses less digits than its factorization.

18023965943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204321.

The product of its (nonzero) digits is 1399680, while the sum is 50.

The spelling of 18023965943 in words is "eighteen billion, twenty-three million, nine hundred sixty-five thousand, nine hundred forty-three".