16918799 has 2 divisors, whose sum is σ = 16918800. Its totient is φ = 16918798.

The previous prime is 16918793. The next prime is 16918807. The reversal of 16918799 is 99781961.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16918799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16918793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8459399 + 8459400.

It is an arithmetic number, because the mean of its divisors is an integer number (8459400).

Almost surely, 2^16918799 is an apocalyptic number.

16918799 is a deficient number, since it is larger than the sum of its proper divisors (1).

16918799 is an equidigital number, since it uses as much as digits as its factorization.

16918799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 50.

The square root of 16918799 is about 4113.2467711043. The cubic root of 16918799 is about 256.7181120993.

The spelling of 16918799 in words is "sixteen million, nine hundred eighteen thousand, seven hundred ninety-nine".