1181818343 has 2 divisors, whose sum is σ = 1181818344. Its totient is φ = 1181818342.

The previous prime is 1181818289. The next prime is 1181818357. The reversal of 1181818343 is 3438181811.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (3438181811) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1181818343 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1181818297 and 1181818306.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1181818843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 590909171 + 590909172.

It is an arithmetic number, because the mean of its divisors is an integer number (590909172).

Almost surely, 2^1181818343 is an apocalyptic number.

1181818343 is a deficient number, since it is larger than the sum of its proper divisors (1).

1181818343 is an equidigital number, since it uses as much as digits as its factorization.

1181818343 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18432, while the sum is 38.

The square root of 1181818343 is about 34377.5848919030. The cubic root of 1181818343 is about 1057.2643184113.

The spelling of 1181818343 in words is "one billion, one hundred eighty-one million, eight hundred eighteen thousand, three hundred forty-three".