16942749689 has 2 divisors, whose sum is σ = 16942749690. Its totient is φ = 16942749688.

The previous prime is 16942749683. The next prime is 16942749709. The reversal of 16942749689 is 98694724961.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14764194064 + 2178555625 = 121508^2 + 46675^2 .

It is a cyclic number.

It is not a de Polignac number, because 16942749689 - 2¹⁶ = 16942684153 is a prime.

It is not a weakly prime, because it can be changed into another prime (16942749683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8471374844 + 8471374845.

It is an arithmetic number, because the mean of its divisors is an integer number (8471374845).

Almost surely, 2^16942749689 is an apocalyptic number.

It is an amenable number.

16942749689 is a deficient number, since it is larger than the sum of its proper divisors (1).

16942749689 is an equidigital number, since it uses as much as digits as its factorization.

16942749689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47029248, while the sum is 65.

The spelling of 16942749689 in words is "sixteen billion, nine hundred forty-two million, seven hundred forty-nine thousand, six hundred eighty-nine".