18814158 has 24 divisors (see below), whose sum is σ = 44470296. Its totient is φ = 5701200.

The previous prime is 18814151. The next prime is 18814171. The reversal of 18814158 is 85141881.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18814151) 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, 47313 + ... + 47708.

It is an arithmetic number, because the mean of its divisors is an integer number (1852929).

Almost surely, 2^18814158 is an apocalyptic number.

18814158 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

18814158 is an abundant number, since it is smaller than the sum of its proper divisors (25656138).

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

18814158 is a wasteful number, since it uses less digits than its factorization.

18814158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95040 (or 95037 counting only the distinct ones).

The product of its digits is 10240, while the sum is 36.

The square root of 18814158 is about 4337.5290200758. The cubic root of 18814158 is about 265.9673108868.

The spelling of 18814158 in words is "eighteen million, eight hundred fourteen thousand, one hundred fifty-eight".