161040589 has 2 divisors, whose sum is σ = 161040590. Its totient is φ = 161040588.

The previous prime is 161040563. The next prime is 161040611. The reversal of 161040589 is 985040161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 161036100 + 4489 = 12690^2 + 67^2 .

It is a cyclic number.

It is not a de Polignac number, because 161040589 - 2⁵ = 161040557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161041589) 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, 80520294 + 80520295.

It is an arithmetic number, because the mean of its divisors is an integer number (80520295).

Almost surely, 2^161040589 is an apocalyptic number.

It is an amenable number.

161040589 is a deficient number, since it is larger than the sum of its proper divisors (1).

161040589 is an equidigital number, since it uses as much as digits as its factorization.

161040589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 161040589 is about 12690.1768703198. The cubic root of 161040589 is about 544.0578948710.

The spelling of 161040589 in words is "one hundred sixty-one million, forty thousand, five hundred eighty-nine".