162243919 has 2 divisors, whose sum is σ = 162243920. Its totient is φ = 162243918.

The previous prime is 162243901. The next prime is 162243941. The reversal of 162243919 is 919342261.

It is a weak prime.

It is an emirp because it is prime and its reverse (919342261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 162243919 - 2⁹ = 162243407 is a prime.

It is a super-2 number, since 2×162243919² = 52646178504957122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162244919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81121959 + 81121960.

It is an arithmetic number, because the mean of its divisors is an integer number (81121960).

Almost surely, 2^162243919 is an apocalyptic number.

162243919 is a deficient number, since it is larger than the sum of its proper divisors (1).

162243919 is an equidigital number, since it uses as much as digits as its factorization.

162243919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 37.

The square root of 162243919 is about 12737.5005004907. The cubic root of 162243919 is about 545.4096395598.

The spelling of 162243919 in words is "one hundred sixty-two million, two hundred forty-three thousand, nine hundred nineteen".