1295481609 has 24 divisors (see below), whose sum is σ = 1886860872. Its totient is φ = 856477440.

The previous prime is 1295481589. The next prime is 1295481613. The reversal of 1295481609 is 9061845921.

It can be written as a sum of positive squares in 4 ways, for example, as 162486009 + 1132995600 = 12747^2 + 33660^2 .

It is not a de Polignac number, because 1295481609 - 2⁸ = 1295481353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1295481619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 810399 + ... + 811995.

It is an arithmetic number, because the mean of its divisors is an integer number (78619203).

Almost surely, 2^1295481609 is an apocalyptic number.

It is an amenable number.

1295481609 is a deficient number, since it is larger than the sum of its proper divisors (591379263).

1295481609 is a wasteful number, since it uses less digits than its factorization.

1295481609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2297 (or 2294 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 1295481609 is about 35992.7994048810. The cubic root of 1295481609 is about 1090.1269691894.

The spelling of 1295481609 in words is "one billion, two hundred ninety-five million, four hundred eighty-one thousand, six hundred nine".