18818134 has 8 divisors (see below), whose sum is σ = 28690128. Its totient is φ = 9254760.

The previous prime is 18818131. The next prime is 18818207. The reversal of 18818134 is 43181881.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 18818134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18818131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77002 + ... + 77245.

It is an arithmetic number, because the mean of its divisors is an integer number (3586266).

Almost surely, 2^18818134 is an apocalyptic number.

18818134 is a deficient number, since it is larger than the sum of its proper divisors (9871994).

18818134 is a wasteful number, since it uses less digits than its factorization.

18818134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154310.

The product of its digits is 6144, while the sum is 34.

The square root of 18818134 is about 4337.9873213277. The cubic root of 18818134 is about 265.9860452098.

The spelling of 18818134 in words is "eighteen million, eight hundred eighteen thousand, one hundred thirty-four".