18908134 has 16 divisors (see below), whose sum is σ = 33205536. Its totient is φ = 7905600.

The previous prime is 18908119. The next prime is 18908159. The reversal of 18908134 is 43180981.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 18908134.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15897 + ... + 17044.

It is an arithmetic number, because the mean of its divisors is an integer number (2075346).

Almost surely, 2^18908134 is an apocalyptic number.

18908134 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18908134 is a deficient number, since it is larger than the sum of its proper divisors (14297402).

18908134 is a wasteful number, since it uses less digits than its factorization.

18908134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32991.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 18908134 is about 4348.3484221024. The cubic root of 18908134 is about 266.4094077996.

The spelling of 18908134 in words is "eighteen million, nine hundred eight thousand, one hundred thirty-four".