1129611839 has 2 divisors, whose sum is σ = 1129611840. Its totient is φ = 1129611838.

The previous prime is 1129611829. The next prime is 1129611841. The reversal of 1129611839 is 9381169211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1129611839 - 2²⁴ = 1112834623 is a prime.

It is a Sophie Germain prime.

Together with 1129611841, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1129611796 and 1129611805.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1129611829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564805919 + 564805920.

It is an arithmetic number, because the mean of its divisors is an integer number (564805920).

Almost surely, 2^1129611839 is an apocalyptic number.

1129611839 is a deficient number, since it is larger than the sum of its proper divisors (1).

1129611839 is an equidigital number, since it uses as much as digits as its factorization.

1129611839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 41.

The square root of 1129611839 is about 33609.6985853786. The cubic root of 1129611839 is about 1041.4611608446.

The spelling of 1129611839 in words is "one billion, one hundred twenty-nine million, six hundred eleven thousand, eight hundred thirty-nine".