1291914959 has 2 divisors, whose sum is σ = 1291914960. Its totient is φ = 1291914958.

The previous prime is 1291914941. The next prime is 1291914989. The reversal of 1291914959 is 9594191921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1291914959 - 2²⁰ = 1290866383 is a prime.

It is a super-2 number, since 2×1291914959² = 3338088522575943362, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1291914929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 645957479 + 645957480.

It is an arithmetic number, because the mean of its divisors is an integer number (645957480).

Almost surely, 2^1291914959 is an apocalyptic number.

1291914959 is a deficient number, since it is larger than the sum of its proper divisors (1).

1291914959 is an equidigital number, since it uses as much as digits as its factorization.

1291914959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 262440, while the sum is 50.

The square root of 1291914959 is about 35943.2185398025. The cubic root of 1291914959 is about 1089.1256234439.

The spelling of 1291914959 in words is "one billion, two hundred ninety-one million, nine hundred fourteen thousand, nine hundred fifty-nine".