1291883837429 has 2 divisors, whose sum is σ = 1291883837430. Its totient is φ = 1291883837428.

The previous prime is 1291883837407. The next prime is 1291883837443. The reversal of 1291883837429 is 9247383881921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1262274720100 + 29609117329 = 1123510^2 + 172073^2 .

It is a cyclic number.

It is not a de Polignac number, because 1291883837429 - 2²⁰ = 1291882788853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1291883837479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 645941918714 + 645941918715.

It is an arithmetic number, because the mean of its divisors is an integer number (645941918715).

Almost surely, 2^{1291883837429} is an apocalyptic number.

It is an amenable number.

1291883837429 is a deficient number, since it is larger than the sum of its proper divisors (1).

1291883837429 is an equidigital number, since it uses as much as digits as its factorization.

1291883837429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41803776, while the sum is 65.

The spelling of 1291883837429 in words is "one trillion, two hundred ninety-one billion, eight hundred eighty-three million, eight hundred thirty-seven thousand, four hundred twenty-nine".