1181325823 has 2 divisors, whose sum is σ = 1181325824. Its totient is φ = 1181325822.

The previous prime is 1181325811. The next prime is 1181325841. The reversal of 1181325823 is 3285231811.

It is a weak prime.

It is an emirp because it is prime and its reverse (3285231811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1181325823 - 2²¹ = 1179228671 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1181325863) 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, 590662911 + 590662912.

It is an arithmetic number, because the mean of its divisors is an integer number (590662912).

Almost surely, 2^1181325823 is an apocalyptic number.

1181325823 is a deficient number, since it is larger than the sum of its proper divisors (1).

1181325823 is an equidigital number, since it uses as much as digits as its factorization.

1181325823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 34.

The square root of 1181325823 is about 34370.4207568077. The cubic root of 1181325823 is about 1057.1174272023.

It can be divided in two parts, 11813 and 25823, that added together give a square (37636 = 194²).

The spelling of 1181325823 in words is "one billion, one hundred eighty-one million, three hundred twenty-five thousand, eight hundred twenty-three".