162385891 has 2 divisors, whose sum is σ = 162385892. Its totient is φ = 162385890.

The previous prime is 162385889. The next prime is 162385901. The reversal of 162385891 is 198583261.

It is a weak prime.

It is an emirp because it is prime and its reverse (198583261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 162385891 - 2¹ = 162385889 is a prime.

Together with 162385889, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (162385831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81192945 + 81192946.

It is an arithmetic number, because the mean of its divisors is an integer number (81192946).

Almost surely, 2^162385891 is an apocalyptic number.

162385891 is a deficient number, since it is larger than the sum of its proper divisors (1).

162385891 is an equidigital number, since it uses as much as digits as its factorization.

162385891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 43.

The square root of 162385891 is about 12743.0722747695. The cubic root of 162385891 is about 545.5686805948.

The spelling of 162385891 in words is "one hundred sixty-two million, three hundred eighty-five thousand, eight hundred ninety-one".