16918807 has 2 divisors, whose sum is σ = 16918808. Its totient is φ = 16918806.

The previous prime is 16918799. The next prime is 16918841. The reversal of 16918807 is 70881961.

It is a weak prime.

It is an emirp because it is prime and its reverse (70881961) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16918807 - 2³ = 16918799 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16918807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16918897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8459403 + 8459404.

It is an arithmetic number, because the mean of its divisors is an integer number (8459404).

Almost surely, 2^16918807 is an apocalyptic number.

16918807 is a deficient number, since it is larger than the sum of its proper divisors (1).

16918807 is an equidigital number, since it uses as much as digits as its factorization.

16918807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 40.

The square root of 16918807 is about 4113.2477435720. The cubic root of 16918807 is about 256.7181525620.

The spelling of 16918807 in words is "sixteen million, nine hundred eighteen thousand, eight hundred seven".