1296851684 has 6 divisors (see below), whose sum is σ = 2269490454. Its totient is φ = 648425840.

The previous prime is 1296851659. The next prime is 1296851687. The reversal of 1296851684 is 4861586921.

It can be written as a sum of positive squares in only one way, i.e., 938809600 + 358042084 = 30640^2 + 18922^2 .

It is not an unprimeable number, because it can be changed into a prime (1296851687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162106457 + ... + 162106464.

It is an arithmetic number, because the mean of its divisors is an integer number (378248409).

Almost surely, 2^1296851684 is an apocalyptic number.

It is an amenable number.

1296851684 is a deficient number, since it is larger than the sum of its proper divisors (972638770).

1296851684 is a wasteful number, since it uses less digits than its factorization.

1296851684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324212925 (or 324212923 counting only the distinct ones).

The product of its digits is 829440, while the sum is 50.

The square root of 1296851684 is about 36011.8270016949. The cubic root of 1296851684 is about 1090.5111324967.

The spelling of 1296851684 in words is "one billion, two hundred ninety-six million, eight hundred fifty-one thousand, six hundred eighty-four".