1151123263 has 2 divisors, whose sum is σ = 1151123264. Its totient is φ = 1151123262.

The previous prime is 1151123179. The next prime is 1151123291. The reversal of 1151123263 is 3623211511.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (3623211511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1151123263 - 2¹³ = 1151115071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1151123293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 575561631 + 575561632.

It is an arithmetic number, because the mean of its divisors is an integer number (575561632).

Almost surely, 2^1151123263 is an apocalyptic number.

1151123263 is a deficient number, since it is larger than the sum of its proper divisors (1).

1151123263 is an equidigital number, since it uses as much as digits as its factorization.

1151123263 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 25.

The square root of 1151123263 is about 33928.2074828600. The cubic root of 1151123263 is about 1048.0305525808.

Adding to 1151123263 its reverse (3623211511), we get a palindrome (4774334774).

The spelling of 1151123263 in words is "one billion, one hundred fifty-one million, one hundred twenty-three thousand, two hundred sixty-three".