162289649 has 2 divisors, whose sum is σ = 162289650. Its totient is φ = 162289648.

The previous prime is 162289643. The next prime is 162289661. The reversal of 162289649 is 946982261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156375025 + 5914624 = 12505^2 + 2432^2 .

It is an emirp because it is prime and its reverse (946982261) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-162289649 is a prime.

It is not a weakly prime, because it can be changed into another prime (162289643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81144824 + 81144825.

It is an arithmetic number, because the mean of its divisors is an integer number (81144825).

Almost surely, 2^162289649 is an apocalyptic number.

It is an amenable number.

162289649 is a deficient number, since it is larger than the sum of its proper divisors (1).

162289649 is an equidigital number, since it uses as much as digits as its factorization.

162289649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 373248, while the sum is 47.

The square root of 162289649 is about 12739.2954671756. The cubic root of 162289649 is about 545.4608777203.

The spelling of 162289649 in words is "one hundred sixty-two million, two hundred eighty-nine thousand, six hundred forty-nine".