16318945 has 8 divisors (see below), whose sum is σ = 19604736. Its totient is φ = 13040496.

The previous prime is 16318933. The next prime is 16318957. The reversal of 16318945 is 54981361.

It is an interprime number because it is at equal distance from previous prime (16318933) and next prime (16318957).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16318945 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6544 + ... + 8686.

It is an arithmetic number, because the mean of its divisors is an integer number (2450592).

Almost surely, 2^16318945 is an apocalyptic number.

It is an amenable number.

16318945 is a deficient number, since it is larger than the sum of its proper divisors (3285791).

16318945 is a wasteful number, since it uses less digits than its factorization.

16318945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3671.

The product of its digits is 25920, while the sum is 37.

The square root of 16318945 is about 4039.6713975273. The cubic root of 16318945 is about 253.6475623308.

The spelling of 16318945 in words is "sixteen million, three hundred eighteen thousand, nine hundred forty-five".