1158165427 has 2 divisors, whose sum is σ = 1158165428. Its totient is φ = 1158165426.

The previous prime is 1158165377. The next prime is 1158165461. The reversal of 1158165427 is 7245618511.

It is a strong prime.

It is an emirp because it is prime and its reverse (7245618511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1158165427 - 2¹⁵ = 1158132659 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1158165427.

It is not a weakly prime, because it can be changed into another prime (1158165497) 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, 579082713 + 579082714.

It is an arithmetic number, because the mean of its divisors is an integer number (579082714).

Almost surely, 2^1158165427 is an apocalyptic number.

1158165427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1158165427 is an equidigital number, since it uses as much as digits as its factorization.

1158165427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 67200, while the sum is 40.

The square root of 1158165427 is about 34031.8296158170. The cubic root of 1158165427 is about 1050.1633689868.

The spelling of 1158165427 in words is "one billion, one hundred fifty-eight million, one hundred sixty-five thousand, four hundred twenty-seven".