1296690853 has 4 divisors (see below), whose sum is σ = 1364937760. Its totient is φ = 1228443948.

The previous prime is 1296690817. The next prime is 1296690877. The reversal of 1296690853 is 3580966921.

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 a cyclic number.

It is not a de Polignac number, because 1296690853 - 2²¹ = 1294593701 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1296690797 and 1296690806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1296600853) 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 3 ways as a sum of consecutive naturals, for example, 34123425 + ... + 34123462.

It is an arithmetic number, because the mean of its divisors is an integer number (341234440).

Almost surely, 2^1296690853 is an apocalyptic number.

It is an amenable number.

1296690853 is a deficient number, since it is larger than the sum of its proper divisors (68246907).

1296690853 is an equidigital number, since it uses as much as digits as its factorization.

1296690853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68246906.

The product of its (nonzero) digits is 699840, while the sum is 49.

The square root of 1296690853 is about 36009.5939021811. The cubic root of 1296690853 is about 1090.4660501770.

The spelling of 1296690853 in words is "one billion, two hundred ninety-six million, six hundred ninety thousand, eight hundred fifty-three".