18345094 has 4 divisors (see below), whose sum is σ = 27517644. Its totient is φ = 9172546.

The previous prime is 18345083. The next prime is 18345097. The reversal of 18345094 is 49054381.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49054381 = 1949 ⋅25169.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18345097) 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 as a sum of consecutive naturals, namely, 4586272 + ... + 4586275.

It is an arithmetic number, because the mean of its divisors is an integer number (6879411).

Almost surely, 2^18345094 is an apocalyptic number.

18345094 is a deficient number, since it is larger than the sum of its proper divisors (9172550).

18345094 is an equidigital number, since it uses as much as digits as its factorization.

18345094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9172549.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 18345094 is about 4283.1173226985. The cubic root of 18345094 is about 263.7383675979.

The spelling of 18345094 in words is "eighteen million, three hundred forty-five thousand, ninety-four".