1296163361 has 8 divisors (see below), whose sum is σ = 1305020424. Its totient is φ = 1287336960.

The previous prime is 1296163339. The next prime is 1296163411. The reversal of 1296163361 is 1633616921.

It can be written as a sum of positive squares in 4 ways, for example, as 130965136 + 1165198225 = 11444^2 + 34135^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1296163361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1296163301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80585 + ... + 95321.

It is an arithmetic number, because the mean of its divisors is an integer number (163127553).

Almost surely, 2^1296163361 is an apocalyptic number.

It is an amenable number.

1296163361 is a deficient number, since it is larger than the sum of its proper divisors (8857063).

1296163361 is a wasteful number, since it uses less digits than its factorization.

1296163361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15331.

The product of its digits is 34992, while the sum is 38.

The square root of 1296163361 is about 36002.2688312834. The cubic root of 1296163361 is about 1090.3181634409.

The spelling of 1296163361 in words is "one billion, two hundred ninety-six million, one hundred sixty-three thousand, three hundred sixty-one".