18343727157 has 16 divisors (see below), whose sum is σ = 27954747392. Its totient is φ = 10481229360.

The previous prime is 18343727153. The next prime is 18343727159. The reversal of 18343727157 is 75172734381.

It is not a de Polignac number, because 18343727157 - 2² = 18343727153 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18343727153) 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, 272232 + ... + 332862.

It is an arithmetic number, because the mean of its divisors is an integer number (1747171712).

Almost surely, 2^18343727157 is an apocalyptic number.

It is an amenable number.

18343727157 is a deficient number, since it is larger than the sum of its proper divisors (9611020235).

18343727157 is a wasteful number, since it uses less digits than its factorization.

18343727157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75048.

The product of its digits is 987840, while the sum is 48.

The spelling of 18343727157 in words is "eighteen billion, three hundred forty-three million, seven hundred twenty-seven thousand, one hundred fifty-seven".