1297292961 has 4 divisors (see below), whose sum is σ = 1729723952. Its totient is φ = 864861972.

The previous prime is 1297292959. The next prime is 1297292987. The reversal of 1297292961 is 1692927921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1297292961 - 2¹ = 1297292959 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1297292961.

It is not an unprimeable number, because it can be changed into a prime (1297292921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216215491 + ... + 216215496.

It is an arithmetic number, because the mean of its divisors is an integer number (432430988).

Almost surely, 2^1297292961 is an apocalyptic number.

It is an amenable number.

1297292961 is a deficient number, since it is larger than the sum of its proper divisors (432430991).

1297292961 is an equidigital number, since it uses as much as digits as its factorization.

1297292961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432430990.

The product of its digits is 244944, while the sum is 48.

The square root of 1297292961 is about 36017.9533149789. The cubic root of 1297292961 is about 1090.6348071148.

The spelling of 1297292961 in words is "one billion, two hundred ninety-seven million, two hundred ninety-two thousand, nine hundred sixty-one".