1296684983 has 8 divisors (see below), whose sum is σ = 1449067536. Its totient is φ = 1150052800.

The previous prime is 1296684959. The next prime is 1296684989. The reversal of 1296684983 is 3894866921.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1296684983 - 2⁶ = 1296684919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1296684989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1437116 + ... + 1438017.

It is an arithmetic number, because the mean of its divisors is an integer number (181133442).

Almost surely, 2^1296684983 is an apocalyptic number.

1296684983 is a deficient number, since it is larger than the sum of its proper divisors (152382553).

1296684983 is a wasteful number, since it uses less digits than its factorization.

1296684983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2875185.

The product of its digits is 4478976, while the sum is 56.

The square root of 1296684983 is about 36009.5123960322. The cubic root of 1296684983 is about 1090.4644046947.

The spelling of 1296684983 in words is "one billion, two hundred ninety-six million, six hundred eighty-four thousand, nine hundred eighty-three".