162789149 has 2 divisors, whose sum is σ = 162789150. Its totient is φ = 162789148.

The previous prime is 162789139. The next prime is 162789167. The reversal of 162789149 is 941987261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104755225 + 58033924 = 10235^2 + 7618^2 .

It is an emirp because it is prime and its reverse (941987261) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-162789149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162789139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81394574 + 81394575.

It is an arithmetic number, because the mean of its divisors is an integer number (81394575).

Almost surely, 2^162789149 is an apocalyptic number.

It is an amenable number.

162789149 is a deficient number, since it is larger than the sum of its proper divisors (1).

162789149 is an equidigital number, since it uses as much as digits as its factorization.

162789149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 47.

The square root of 162789149 is about 12758.8851001959. The cubic root of 162789149 is about 546.0199165764.

The spelling of 162789149 in words is "one hundred sixty-two million, seven hundred eighty-nine thousand, one hundred forty-nine".