1295489549 has 2 divisors, whose sum is σ = 1295489550. Its totient is φ = 1295489548.

The previous prime is 1295489543. The next prime is 1295489579. The reversal of 1295489549 is 9459845921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1292402500 + 3087049 = 35950^2 + 1757^2 .

It is a cyclic number.

It is not a de Polignac number, because 1295489549 - 2²⁴ = 1278712333 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1295489494 and 1295489503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1295489543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 647744774 + 647744775.

It is an arithmetic number, because the mean of its divisors is an integer number (647744775).

Almost surely, 2^1295489549 is an apocalyptic number.

It is an amenable number.

1295489549 is a deficient number, since it is larger than the sum of its proper divisors (1).

1295489549 is an equidigital number, since it uses as much as digits as its factorization.

1295489549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4665600, while the sum is 56.

The square root of 1295489549 is about 35992.9097045515. The cubic root of 1295489549 is about 1090.1291963123.

The spelling of 1295489549 in words is "one billion, two hundred ninety-five million, four hundred eighty-nine thousand, five hundred forty-nine".