162397489 has 2 divisors, whose sum is σ = 162397490. Its totient is φ = 162397488.

The previous prime is 162397439. The next prime is 162397507. The reversal of 162397489 is 984793261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 153958464 + 8439025 = 12408^2 + 2905^2 .

It is an emirp because it is prime and its reverse (984793261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 162397489 - 2¹⁵ = 162364721 is a prime.

It is not a weakly prime, because it can be changed into another prime (162397429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81198744 + 81198745.

It is an arithmetic number, because the mean of its divisors is an integer number (81198745).

Almost surely, 2^162397489 is an apocalyptic number.

It is an amenable number.

162397489 is a deficient number, since it is larger than the sum of its proper divisors (1).

162397489 is an equidigital number, since it uses as much as digits as its factorization.

162397489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 49.

The square root of 162397489 is about 12743.5273374368. The cubic root of 162397489 is about 545.5816689049.

The spelling of 162397489 in words is "one hundred sixty-two million, three hundred ninety-seven thousand, four hundred eighty-nine".