1158345863 has 2 divisors, whose sum is σ = 1158345864. Its totient is φ = 1158345862.

The previous prime is 1158345841. The next prime is 1158345889. The reversal of 1158345863 is 3685438511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1158345863 - 2⁸ = 1158345607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1158345833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 579172931 + 579172932.

It is an arithmetic number, because the mean of its divisors is an integer number (579172932).

Almost surely, 2^1158345863 is an apocalyptic number.

1158345863 is a deficient number, since it is larger than the sum of its proper divisors (1).

1158345863 is an equidigital number, since it uses as much as digits as its factorization.

1158345863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 345600, while the sum is 44.

The square root of 1158345863 is about 34034.4805013974. The cubic root of 1158345863 is about 1050.2179027733.

The spelling of 1158345863 in words is "one billion, one hundred fifty-eight million, three hundred forty-five thousand, eight hundred sixty-three".