162440869 has 2 divisors, whose sum is σ = 162440870. Its totient is φ = 162440868.

The previous prime is 162440851. The next prime is 162440903. The reversal of 162440869 is 968044261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127983969 + 34456900 = 11313^2 + 5870^2 .

It is an emirp because it is prime and its reverse (968044261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 162440869 - 2⁹ = 162440357 is a prime.

It is a super-2 number, since 2×162440869² = 52774071842950322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162440809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81220434 + 81220435.

It is an arithmetic number, because the mean of its divisors is an integer number (81220435).

Almost surely, 2^162440869 is an apocalyptic number.

It is an amenable number.

162440869 is a deficient number, since it is larger than the sum of its proper divisors (1).

162440869 is an equidigital number, since it uses as much as digits as its factorization.

162440869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 162440869 is about 12745.2292643169. The cubic root of 162440869 is about 545.6302436004.

The spelling of 162440869 in words is "one hundred sixty-two million, four hundred forty thousand, eight hundred sixty-nine".