162205873 has 2 divisors, whose sum is σ = 162205874. Its totient is φ = 162205872.

The previous prime is 162205871. The next prime is 162205909. The reversal of 162205873 is 378502261.

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., 82228624 + 79977249 = 9068^2 + 8943^2 .

It is an emirp because it is prime and its reverse (378502261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 162205873 - 2¹ = 162205871 is a prime.

Together with 162205871, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (162205871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81102936 + 81102937.

It is an arithmetic number, because the mean of its divisors is an integer number (81102937).

Almost surely, 2^162205873 is an apocalyptic number.

It is an amenable number.

162205873 is a deficient number, since it is larger than the sum of its proper divisors (1).

162205873 is an equidigital number, since it uses as much as digits as its factorization.

162205873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 162205873 is about 12736.0069488046. The cubic root of 162205873 is about 545.3670035965.

The spelling of 162205873 in words is "one hundred sixty-two million, two hundred five thousand, eight hundred seventy-three".