1158636539 has 2 divisors, whose sum is σ = 1158636540. Its totient is φ = 1158636538.

The previous prime is 1158636503. The next prime is 1158636541. The reversal of 1158636539 is 9356368511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1158636539 - 2¹⁶ = 1158571003 is a prime.

Together with 1158636541, 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 = 1158636493 and 1158636502.

It is not a weakly prime, because it can be changed into another prime (1158636599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 579318269 + 579318270.

It is an arithmetic number, because the mean of its divisors is an integer number (579318270).

Almost surely, 2^1158636539 is an apocalyptic number.

1158636539 is a deficient number, since it is larger than the sum of its proper divisors (1).

1158636539 is an equidigital number, since it uses as much as digits as its factorization.

1158636539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 583200, while the sum is 47.

The square root of 1158636539 is about 34038.7505499247. The cubic root of 1158636539 is about 1050.3057428612.

The spelling of 1158636539 in words is "one billion, one hundred fifty-eight million, six hundred thirty-six thousand, five hundred thirty-nine".