1296681774 has 8 divisors (see below), whose sum is σ = 2593363560. Its totient is φ = 432227256.

The previous prime is 1296681773. The next prime is 1296681781. The reversal of 1296681774 is 4771866921.

1296681774 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

1296681774 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1296681773) 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, 108056809 + ... + 108056820.

It is an arithmetic number, because the mean of its divisors is an integer number (324170445).

Almost surely, 2^1296681774 is an apocalyptic number.

1296681774 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1296681774 is a wasteful number, since it uses less digits than its factorization.

1296681774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216113634.

The product of its digits is 1016064, while the sum is 51.

The square root of 1296681774 is about 36009.4678383339. The cubic root of 1296681774 is about 1090.4635051436.

The spelling of 1296681774 in words is "one billion, two hundred ninety-six million, six hundred eighty-one thousand, seven hundred seventy-four".