18103158 has 24 divisors (see below), whose sum is σ = 39335400. Its totient is φ = 6017184.

The previous prime is 18103133. The next prime is 18103159. The reversal of 18103158 is 85130181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18103159) 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 11 ways as a sum of consecutive naturals, for example, 6133 + ... + 8591.

It is an arithmetic number, because the mean of its divisors is an integer number (1638975).

Almost surely, 2^18103158 is an apocalyptic number.

18103158 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

18103158 is an abundant number, since it is smaller than the sum of its proper divisors (21232242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18103158 is a wasteful number, since it uses less digits than its factorization.

18103158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2876 (or 2873 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 27.

The square root of 18103158 is about 4254.7806053897. The cubic root of 18103158 is about 262.5738350123.

The spelling of 18103158 in words is "eighteen million, one hundred three thousand, one hundred fifty-eight".