1158363989 has 2 divisors, whose sum is σ = 1158363990. Its totient is φ = 1158363988.

The previous prime is 1158363923. The next prime is 1158364001. The reversal of 1158363989 is 9893638511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1019524900 + 138839089 = 31930^2 + 11783^2 .

It is an emirp because it is prime and its reverse (9893638511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1158363989 - 2¹² = 1158359893 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1158363989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1158363889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 579181994 + 579181995.

It is an arithmetic number, because the mean of its divisors is an integer number (579181995).

Almost surely, 2^1158363989 is an apocalyptic number.

It is an amenable number.

1158363989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1158363989 is an equidigital number, since it uses as much as digits as its factorization.

1158363989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1399680, while the sum is 53.

The square root of 1158363989 is about 34034.7467891271. The cubic root of 1158363989 is about 1050.2233807429.

The spelling of 1158363989 in words is "one billion, one hundred fifty-eight million, three hundred sixty-three thousand, nine hundred eighty-nine".