18315134 has 16 divisors (see below), whose sum is σ = 28090800. Its totient is φ = 8953344.

The previous prime is 18315133. The next prime is 18315163. The reversal of 18315134 is 43151381.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18315131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31454 + ... + 32030.

It is an arithmetic number, because the mean of its divisors is an integer number (1755675).

Almost surely, 2^18315134 is an apocalyptic number.

18315134 is a deficient number, since it is larger than the sum of its proper divisors (9775666).

18315134 is a wasteful number, since it uses less digits than its factorization.

18315134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 907.

The product of its digits is 1440, while the sum is 26.

The square root of 18315134 is about 4279.6184409361. The cubic root of 18315134 is about 263.5947159880.

The spelling of 18315134 in words is "eighteen million, three hundred fifteen thousand, one hundred thirty-four".