162009889 has 2 divisors, whose sum is σ = 162009890. Its totient is φ = 162009888.

The previous prime is 162009763. The next prime is 162009899. The reversal of 162009889 is 988900261.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 157929489 + 4080400 = 12567^2 + 2020^2 .

It is a cyclic number.

It is not a de Polignac number, because 162009889 - 2⁹ = 162009377 is a prime.

It is not a weakly prime, because it can be changed into another prime (162009899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81004944 + 81004945.

It is an arithmetic number, because the mean of its divisors is an integer number (81004945).

Almost surely, 2^162009889 is an apocalyptic number.

It is an amenable number.

162009889 is a deficient number, since it is larger than the sum of its proper divisors (1).

162009889 is an equidigital number, since it uses as much as digits as its factorization.

162009889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 162009889 is about 12728.3105320384. The cubic root of 162009889 is about 545.1472699113.

The spelling of 162009889 in words is "one hundred sixty-two million, nine thousand, eight hundred eighty-nine".