160997789 has 2 divisors, whose sum is σ = 160997790. Its totient is φ = 160997788.

The previous prime is 160997747. The next prime is 160997797. The reversal of 160997789 is 987799061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111408025 + 49589764 = 10555^2 + 7042^2 .

It is a cyclic number.

It is not a de Polignac number, because 160997789 - 2²⁰ = 159949213 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (160994789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80498894 + 80498895.

It is an arithmetic number, because the mean of its divisors is an integer number (80498895).

Almost surely, 2^160997789 is an apocalyptic number.

It is an amenable number.

160997789 is a deficient number, since it is larger than the sum of its proper divisors (1).

160997789 is an equidigital number, since it uses as much as digits as its factorization.

160997789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1714608, while the sum is 56.

The square root of 160997789 is about 12688.4904145450. The cubic root of 160997789 is about 544.0096922383.

The spelling of 160997789 in words is "one hundred sixty million, nine hundred ninety-seven thousand, seven hundred eighty-nine".