162081589 has 2 divisors, whose sum is σ = 162081590. Its totient is φ = 162081588.

The previous prime is 162081559. The next prime is 162081599. The reversal of 162081589 is 985180261.

162081589 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 149866564 + 12215025 = 12242^2 + 3495^2 .

It is a cyclic number.

It is not a de Polignac number, because 162081589 - 2⁷ = 162081461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162081559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81040794 + 81040795.

It is an arithmetic number, because the mean of its divisors is an integer number (81040795).

Almost surely, 2^162081589 is an apocalyptic number.

It is an amenable number.

162081589 is a deficient number, since it is larger than the sum of its proper divisors (1).

162081589 is an equidigital number, since it uses as much as digits as its factorization.

162081589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 40.

The square root of 162081589 is about 12731.1267765269. The cubic root of 162081589 is about 545.2276791890.

The spelling of 162081589 in words is "one hundred sixty-two million, eighty-one thousand, five hundred eighty-nine".