162643469 has 2 divisors, whose sum is σ = 162643470. Its totient is φ = 162643468.

The previous prime is 162643447. The next prime is 162643549. The reversal of 162643469 is 964346261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115885225 + 46758244 = 10765^2 + 6838^2 .

It is an emirp because it is prime and its reverse (964346261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 162643469 - 2²⁰ = 161594893 is a prime.

It is a super-2 number, since 2×162643469² = 52905796016707922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162643769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81321734 + 81321735.

It is an arithmetic number, because the mean of its divisors is an integer number (81321735).

Almost surely, 2^162643469 is an apocalyptic number.

It is an amenable number.

162643469 is a deficient number, since it is larger than the sum of its proper divisors (1).

162643469 is an equidigital number, since it uses as much as digits as its factorization.

162643469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 41.

The square root of 162643469 is about 12753.1748596183. The cubic root of 162643469 is about 545.8569902352.

The spelling of 162643469 in words is "one hundred sixty-two million, six hundred forty-three thousand, four hundred sixty-nine".