1129947866837 has 2 divisors, whose sum is σ = 1129947866838. Its totient is φ = 1129947866836.

The previous prime is 1129947866833. The next prime is 1129947866881. The reversal of 1129947866837 is 7386687499211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1129286657041 + 661209796 = 1062679^2 + 25714^2 .

It is a cyclic number.

It is not a de Polignac number, because 1129947866837 - 2² = 1129947866833 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1129947866833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564973933418 + 564973933419.

It is an arithmetic number, because the mean of its divisors is an integer number (564973933419).

Almost surely, 2^{1129947866837} is an apocalyptic number.

It is an amenable number.

1129947866837 is a deficient number, since it is larger than the sum of its proper divisors (1).

1129947866837 is an equidigital number, since it uses as much as digits as its factorization.

1129947866837 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 219469824, while the sum is 71.

The spelling of 1129947866837 in words is "one trillion, one hundred twenty-nine billion, nine hundred forty-seven million, eight hundred sixty-six thousand, eight hundred thirty-seven".