1296995993 has 4 divisors (see below), whose sum is σ = 1365258960. Its totient is φ = 1228733028.

The previous prime is 1296995963. The next prime is 1296996007. The reversal of 1296995993 is 3995996921.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3995996921 = 7 ⋅570856703.

It is a cyclic number.

It is not a de Polignac number, because 1296995993 - 2⁶ = 1296995929 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1296995933) 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, 34131455 + ... + 34131492.

It is an arithmetic number, because the mean of its divisors is an integer number (341314740).

Almost surely, 2^1296995993 is an apocalyptic number.

It is an amenable number.

1296995993 is a deficient number, since it is larger than the sum of its proper divisors (68262967).

1296995993 is an equidigital number, since it uses as much as digits as its factorization.

1296995993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68262966.

The product of its digits is 10628820, while the sum is 62.

The square root of 1296995993 is about 36013.8305793760. The cubic root of 1296995993 is about 1090.5515803845.

The spelling of 1296995993 in words is "one billion, two hundred ninety-six million, nine hundred ninety-five thousand, nine hundred ninety-three".