16618345 has 16 divisors (see below), whose sum is σ = 20465280. Its totient is φ = 12950784.

The previous prime is 16618321. The next prime is 16618373. The reversal of 16618345 is 54381661.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 16618345 - 2⁵ = 16618313 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16618345.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37636 + ... + 38074.

It is an arithmetic number, because the mean of its divisors is an integer number (1279080).

Almost surely, 2^16618345 is an apocalyptic number.

It is an amenable number.

16618345 is a deficient number, since it is larger than the sum of its proper divisors (3846935).

16618345 is a wasteful number, since it uses less digits than its factorization.

16618345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624.

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

The square root of 16618345 is about 4076.5604374276. The cubic root of 16618345 is about 255.1893761771.

The spelling of 16618345 in words is "sixteen million, six hundred eighteen thousand, three hundred forty-five".