18585939123 has 12 divisors (see below), whose sum is σ = 27571934208. Its totient is φ = 12055744080.

The previous prime is 18585939109. The next prime is 18585939143. The reversal of 18585939123 is 32193958581.

18585939123 is a `hidden beast` number, since 1 + 8 + 585 + 9 + 39 + 1 + 23 = 666.

It is not a de Polignac number, because 18585939123 - 2⁶ = 18585939059 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18585939123.

It is not an unprimeable number, because it can be changed into a prime (18585939143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27906483 + ... + 27907148.

It is an arithmetic number, because the mean of its divisors is an integer number (2297661184).

Almost surely, 2^18585939123 is an apocalyptic number.

18585939123 is a deficient number, since it is larger than the sum of its proper divisors (8985995085).

18585939123 is a wasteful number, since it uses less digits than its factorization.

18585939123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55813674 (or 55813671 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 54.

The spelling of 18585939123 in words is "eighteen billion, five hundred eighty-five million, nine hundred thirty-nine thousand, one hundred twenty-three".