162656009 has 2 divisors, whose sum is σ = 162656010. Its totient is φ = 162656008.

The previous prime is 162655973. The next prime is 162656059. The reversal of 162656009 is 900656261.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129846025 + 32809984 = 11395^2 + 5728^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-162656009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 162656009.

It is not a weakly prime, because it can be changed into another prime (162656059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81328004 + 81328005.

It is an arithmetic number, because the mean of its divisors is an integer number (81328005).

Almost surely, 2^162656009 is an apocalyptic number.

It is an amenable number.

162656009 is a deficient number, since it is larger than the sum of its proper divisors (1).

162656009 is an equidigital number, since it uses as much as digits as its factorization.

162656009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 162656009 is about 12753.6664924248. Note that the first 3 decimals coincide. The cubic root of 162656009 is about 545.8710186103.

The spelling of 162656009 in words is "one hundred sixty-two million, six hundred fifty-six thousand, nine".