18345326 has 4 divisors (see below), whose sum is σ = 27517992. Its totient is φ = 9172662.

The previous prime is 18345311. The next prime is 18345331. The reversal of 18345326 is 62354381.

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

It is a junction number, because it is equal to n+sod(n) for n = 18345292 and 18345301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4586330 + ... + 4586333.

It is an arithmetic number, because the mean of its divisors is an integer number (6879498).

Almost surely, 2^18345326 is an apocalyptic number.

18345326 is a deficient number, since it is larger than the sum of its proper divisors (9172666).

18345326 is an equidigital number, since it uses as much as digits as its factorization.

18345326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9172665.

The product of its digits is 17280, while the sum is 32.

The square root of 18345326 is about 4283.1444056908. The cubic root of 18345326 is about 263.7394793764.

The spelling of 18345326 in words is "eighteen million, three hundred forty-five thousand, three hundred twenty-six".