18103159 has 2 divisors, whose sum is σ = 18103160. Its totient is φ = 18103158.

The previous prime is 18103133. The next prime is 18103193. The reversal of 18103159 is 95130181.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18103159 - 2⁹ = 18102647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18103109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9051579 + 9051580.

It is an arithmetic number, because the mean of its divisors is an integer number (9051580).

Almost surely, 2^18103159 is an apocalyptic number.

18103159 is a deficient number, since it is larger than the sum of its proper divisors (1).

18103159 is an equidigital number, since it uses as much as digits as its factorization.

18103159 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 28.

The square root of 18103159 is about 4254.7807229045. The cubic root of 18103159 is about 262.5738398471.

The spelling of 18103159 in words is "eighteen million, one hundred three thousand, one hundred fifty-nine".