168467489 has 2 divisors, whose sum is σ = 168467490. Its totient is φ = 168467488.

The previous prime is 168467473. The next prime is 168467513. The reversal of 168467489 is 984764861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135024400 + 33443089 = 11620^2 + 5783^2 .

It is a cyclic number.

It is not a de Polignac number, because 168467489 - 2⁴ = 168467473 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 168467489.

It is not a weakly prime, because it can be changed into another prime (168467449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84233744 + 84233745.

It is an arithmetic number, because the mean of its divisors is an integer number (84233745).

Almost surely, 2^168467489 is an apocalyptic number.

It is an amenable number.

168467489 is a deficient number, since it is larger than the sum of its proper divisors (1).

168467489 is an equidigital number, since it uses as much as digits as its factorization.

168467489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2322432, while the sum is 53.

The square root of 168467489 is about 12979.5026484068. The cubic root of 168467489 is about 552.2961734578.

The spelling of 168467489 in words is "one hundred sixty-eight million, four hundred sixty-seven thousand, four hundred eighty-nine".