1129866539 has 2 divisors, whose sum is σ = 1129866540. Its totient is φ = 1129866538.

The previous prime is 1129866533. The next prime is 1129866587. The reversal of 1129866539 is 9356689211.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1129866539 - 2¹² = 1129862443 is a prime.

It is not a weakly prime, because it can be changed into another prime (1129866533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564933269 + 564933270.

It is an arithmetic number, because the mean of its divisors is an integer number (564933270).

Almost surely, 2^1129866539 is an apocalyptic number.

1129866539 is a deficient number, since it is larger than the sum of its proper divisors (1).

1129866539 is an equidigital number, since it uses as much as digits as its factorization.

1129866539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 699840, while the sum is 50.

The square root of 1129866539 is about 33613.4874566743. The cubic root of 1129866539 is about 1041.5394296842.

The spelling of 1129866539 in words is "one billion, one hundred twenty-nine million, eight hundred sixty-six thousand, five hundred thirty-nine".