18836134 has 4 divisors (see below), whose sum is σ = 28254204. Its totient is φ = 9418066.

The previous prime is 18836131. The next prime is 18836137. The reversal of 18836134 is 43163881.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (18836131) and next prime (18836137).

It is a self number, because there is not a number n which added to its sum of digits gives 18836134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18836131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4709032 + ... + 4709035.

It is an arithmetic number, because the mean of its divisors is an integer number (7063551).

Almost surely, 2^18836134 is an apocalyptic number.

18836134 is a deficient number, since it is larger than the sum of its proper divisors (9418070).

18836134 is an equidigital number, since it uses as much as digits as its factorization.

18836134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9418069.

The product of its digits is 13824, while the sum is 34.

The square root of 18836134 is about 4340.0615203013. The cubic root of 18836134 is about 266.0708255445.

The spelling of 18836134 in words is "eighteen million, eight hundred thirty-six thousand, one hundred thirty-four".