18122389593 has 16 divisors (see below), whose sum is σ = 30125531136. Its totient is φ = 9414228240.

The previous prime is 18122389567. The next prime is 18122389619. The reversal of 18122389593 is 39598322181.

It is an interprime number because it is at equal distance from previous prime (18122389567) and next prime (18122389619).

It is not a de Polignac number, because 18122389593 - 2⁵ = 18122389561 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18122389513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39225721 + ... + 39226182.

It is an arithmetic number, because the mean of its divisors is an integer number (1882845696).

Almost surely, 2^18122389593 is an apocalyptic number.

It is an amenable number.

18122389593 is a deficient number, since it is larger than the sum of its proper divisors (12003141543).

18122389593 is a wasteful number, since it uses less digits than its factorization.

18122389593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78451924.

The product of its digits is 933120, while the sum is 51.

The spelling of 18122389593 in words is "eighteen billion, one hundred twenty-two million, three hundred eighty-nine thousand, five hundred ninety-three".