169465649 has 2 divisors, whose sum is σ = 169465650. Its totient is φ = 169465648.

The previous prime is 169465619. The next prime is 169465651. The reversal of 169465649 is 946564961.

169465649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92025649 + 77440000 = 9593^2 + 8800^2 .

It is a cyclic number.

It is not a de Polignac number, because 169465649 - 2¹² = 169461553 is a prime.

Together with 169465651, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 169465597 and 169465606.

It is not a weakly prime, because it can be changed into another prime (169465609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84732824 + 84732825.

It is an arithmetic number, because the mean of its divisors is an integer number (84732825).

Almost surely, 2^169465649 is an apocalyptic number.

It is an amenable number.

169465649 is a deficient number, since it is larger than the sum of its proper divisors (1).

169465649 is an equidigital number, since it uses as much as digits as its factorization.

169465649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1399680, while the sum is 50.

The square root of 169465649 is about 13017.8972572378. The cubic root of 169465649 is about 553.3848004175.

The spelling of 169465649 in words is "one hundred sixty-nine million, four hundred sixty-five thousand, six hundred forty-nine".