162241381 has 2 divisors, whose sum is σ = 162241382. Its totient is φ = 162241380.

The previous prime is 162241369. The next prime is 162241403. The reversal of 162241381 is 183142261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139830625 + 22410756 = 11825^2 + 4734^2 .

It is a cyclic number.

It is not a de Polignac number, because 162241381 - 2¹¹ = 162239333 is a prime.

It is a super-2 number, since 2×162241381² = 52644531417574322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162241351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81120690 + 81120691.

It is an arithmetic number, because the mean of its divisors is an integer number (81120691).

Almost surely, 2^162241381 is an apocalyptic number.

It is an amenable number.

162241381 is a deficient number, since it is larger than the sum of its proper divisors (1).

162241381 is an equidigital number, since it uses as much as digits as its factorization.

162241381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 28.

The square root of 162241381 is about 12737.4008730196. The cubic root of 162241381 is about 545.4067955768.

The spelling of 162241381 in words is "one hundred sixty-two million, two hundred forty-one thousand, three hundred eighty-one".