18926156851 has 12 divisors (see below), whose sum is σ = 22344744648. Its totient is φ = 15980291712.

The previous prime is 18926156827. The next prime is 18926156881. The reversal of 18926156851 is 15865162981.

It is a happy number.

It is not a de Polignac number, because 18926156851 - 2⁹ = 18926156339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18926156881) 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, 2879166 + ... + 2885731.

It is an arithmetic number, because the mean of its divisors is an integer number (1862062054).

Almost surely, 2^18926156851 is an apocalyptic number.

18926156851 is a deficient number, since it is larger than the sum of its proper divisors (3418587797).

18926156851 is an equidigital number, since it uses as much as digits as its factorization.

18926156851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5764978 (or 5764971 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 52.

The spelling of 18926156851 in words is "eighteen billion, nine hundred twenty-six million, one hundred fifty-six thousand, eight hundred fifty-one".