1159242391 has 2 divisors, whose sum is σ = 1159242392. Its totient is φ = 1159242390.

The previous prime is 1159242367. The next prime is 1159242407. The reversal of 1159242391 is 1932429511.

It is a strong prime.

It is an emirp because it is prime and its reverse (1932429511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1159242391 - 2¹⁷ = 1159111319 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1159242391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1159242361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 579621195 + 579621196.

It is an arithmetic number, because the mean of its divisors is an integer number (579621196).

Almost surely, 2^1159242391 is an apocalyptic number.

1159242391 is a deficient number, since it is larger than the sum of its proper divisors (1).

1159242391 is an equidigital number, since it uses as much as digits as its factorization.

1159242391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 37.

The square root of 1159242391 is about 34047.6488321881. The cubic root of 1159242391 is about 1050.4887795408.

The spelling of 1159242391 in words is "one billion, one hundred fifty-nine million, two hundred forty-two thousand, three hundred ninety-one".