16890609733 has 2 divisors, whose sum is σ = 16890609734. Its totient is φ = 16890609732.

The previous prime is 16890609719. The next prime is 16890609737. The reversal of 16890609733 is 33790609861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12209587009 + 4681022724 = 110497^2 + 68418^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16890609733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16890609737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8445304866 + 8445304867.

It is an arithmetic number, because the mean of its divisors is an integer number (8445304867).

Almost surely, 2^16890609733 is an apocalyptic number.

It is an amenable number.

16890609733 is a deficient number, since it is larger than the sum of its proper divisors (1).

16890609733 is an equidigital number, since it uses as much as digits as its factorization.

16890609733 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1469664, while the sum is 52.

The spelling of 16890609733 in words is "sixteen billion, eight hundred ninety million, six hundred nine thousand, seven hundred thirty-three".