162620009 has 2 divisors, whose sum is σ = 162620010. Its totient is φ = 162620008.

The previous prime is 162619997. The next prime is 162620027. The reversal of 162620009 is 900026261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85969984 + 76650025 = 9272^2 + 8755^2 .

It is an emirp because it is prime and its reverse (900026261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 162620009 - 2²⁰ = 161571433 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 162620009.

It is not a weakly prime, because it can be changed into another prime (162620099) 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, 81310004 + 81310005.

It is an arithmetic number, because the mean of its divisors is an integer number (81310005).

Almost surely, 2^162620009 is an apocalyptic number.

It is an amenable number.

162620009 is a deficient number, since it is larger than the sum of its proper divisors (1).

162620009 is an equidigital number, since it uses as much as digits as its factorization.

162620009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 162620009 is about 12752.2550554794. The cubic root of 162620009 is about 545.8307438268.

The spelling of 162620009 in words is "one hundred sixty-two million, six hundred twenty thousand, nine".