1296863213 has 2 divisors, whose sum is σ = 1296863214. Its totient is φ = 1296863212.

The previous prime is 1296863179. The next prime is 1296863237. The reversal of 1296863213 is 3123686921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1189077289 + 107785924 = 34483^2 + 10382^2 .

It is a cyclic number.

It is not a de Polignac number, because 1296863213 - 2⁶ = 1296863149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1296862213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 648431606 + 648431607.

It is an arithmetic number, because the mean of its divisors is an integer number (648431607).

Almost surely, 2^1296863213 is an apocalyptic number.

It is an amenable number.

1296863213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1296863213 is an equidigital number, since it uses as much as digits as its factorization.

1296863213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 41.

The square root of 1296863213 is about 36011.9870737509. The cubic root of 1296863213 is about 1090.5143640319.

The spelling of 1296863213 in words is "one billion, two hundred ninety-six million, eight hundred sixty-three thousand, two hundred thirteen".