18349345 has 32 divisors (see below), whose sum is σ = 27175680. Its totient is φ = 11612160.

The previous prime is 18349339. The next prime is 18349361. The reversal of 18349345 is 54394381.

It is not a de Polignac number, because 18349345 - 2³ = 18349337 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26929 + ... + 27601.

It is an arithmetic number, because the mean of its divisors is an integer number (849240).

Almost surely, 2^18349345 is an apocalyptic number.

It is an amenable number.

18349345 is a deficient number, since it is larger than the sum of its proper divisors (8826335).

18349345 is a wasteful number, since it uses less digits than its factorization.

18349345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745.

The product of its digits is 51840, while the sum is 37.

The square root of 18349345 is about 4283.6135446606. The cubic root of 18349345 is about 263.7587375346.

The spelling of 18349345 in words is "eighteen million, three hundred forty-nine thousand, three hundred forty-five".