18756952123 has 16 divisors (see below), whose sum is σ = 23088787456. Its totient is φ = 14838539040.

The previous prime is 18756952051. The next prime is 18756952169. The reversal of 18756952123 is 32125965781.

It is a de Polignac number, because none of the positive numbers 2^k-18756952123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18756952723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1020190 + ... + 1038412.

It is an arithmetic number, because the mean of its divisors is an integer number (1443049216).

Almost surely, 2^18756952123 is an apocalyptic number.

18756952123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

18756952123 is a deficient number, since it is larger than the sum of its proper divisors (4331835333).

18756952123 is a wasteful number, since it uses less digits than its factorization.

18756952123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29554.

The product of its digits is 907200, while the sum is 49.

The spelling of 18756952123 in words is "eighteen billion, seven hundred fifty-six million, nine hundred fifty-two thousand, one hundred twenty-three".