1296190663 has 2 divisors, whose sum is σ = 1296190664. Its totient is φ = 1296190662.

The previous prime is 1296190639. The next prime is 1296190669. The reversal of 1296190663 is 3660916921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1296190663 - 2¹³ = 1296182471 is a prime.

It is a super-2 number, since 2×1296190663² = 3360220469696759138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1296190669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 648095331 + 648095332.

It is an arithmetic number, because the mean of its divisors is an integer number (648095332).

Almost surely, 2^1296190663 is an apocalyptic number.

1296190663 is a deficient number, since it is larger than the sum of its proper divisors (1).

1296190663 is an equidigital number, since it uses as much as digits as its factorization.

1296190663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976, while the sum is 43.

The square root of 1296190663 is about 36002.6479998347. The cubic root of 1296190663 is about 1090.3258187664.

The spelling of 1296190663 in words is "one billion, two hundred ninety-six million, one hundred ninety thousand, six hundred sixty-three".