18394134 has 32 divisors (see below), whose sum is σ = 40300416. Its totient is φ = 5550720.

The previous prime is 18394133. The next prime is 18394139. The reversal of 18394134 is 43149381.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 18394095 and 18394104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18394133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21829 + ... + 22655.

It is an arithmetic number, because the mean of its divisors is an integer number (1259388).

Almost surely, 2^18394134 is an apocalyptic number.

18394134 is an abundant number, since it is smaller than the sum of its proper divisors (21906282).

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

18394134 is a wasteful number, since it uses less digits than its factorization.

18394134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180.

The product of its digits is 10368, while the sum is 33.

The square root of 18394134 is about 4288.8383042498. The cubic root of 18394134 is about 263.9731664646.

It can be divided in two parts, 18394 and 134, that added together give a triangular number (18528 = T₁₉₂).

The spelling of 18394134 in words is "eighteen million, three hundred ninety-four thousand, one hundred thirty-four".