18113159 has 2 divisors, whose sum is σ = 18113160. Its totient is φ = 18113158.

The previous prime is 18113153. The next prime is 18113203. The reversal of 18113159 is 95131181.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18113159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18113153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9056579 + 9056580.

It is an arithmetic number, because the mean of its divisors is an integer number (9056580).

Almost surely, 2^18113159 is an apocalyptic number.

18113159 is a deficient number, since it is larger than the sum of its proper divisors (1).

18113159 is an equidigital number, since it uses as much as digits as its factorization.

18113159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 29.

The square root of 18113159 is about 4255.9557093560. The cubic root of 18113159 is about 262.6221786494.

The spelling of 18113159 in words is "eighteen million, one hundred thirteen thousand, one hundred fifty-nine".