169125449 has 2 divisors, whose sum is σ = 169125450. Its totient is φ = 169125448.

The previous prime is 169125433. The next prime is 169125461. The reversal of 169125449 is 944521961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99102025 + 70023424 = 9955^2 + 8368^2 .

It is a cyclic number.

It is not a de Polignac number, because 169125449 - 2⁴ = 169125433 is a prime.

It is not a weakly prime, because it can be changed into another prime (169125349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84562724 + 84562725.

It is an arithmetic number, because the mean of its divisors is an integer number (84562725).

Almost surely, 2^169125449 is an apocalyptic number.

It is an amenable number.

169125449 is a deficient number, since it is larger than the sum of its proper divisors (1).

169125449 is an equidigital number, since it uses as much as digits as its factorization.

169125449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 41.

The square root of 169125449 is about 13004.8240664763. The cubic root of 169125449 is about 553.0142481780.

The spelling of 169125449 in words is "one hundred sixty-nine million, one hundred twenty-five thousand, four hundred forty-nine".