1171355963 has 2 divisors, whose sum is σ = 1171355964. Its totient is φ = 1171355962.

The previous prime is 1171355929. The next prime is 1171355993. The reversal of 1171355963 is 3695531711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1171355963 - 2¹⁰ = 1171354939 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1171355963.

It is not a weakly prime, because it can be changed into another prime (1171355993) 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, 585677981 + 585677982.

It is an arithmetic number, because the mean of its divisors is an integer number (585677982).

Almost surely, 2^1171355963 is an apocalyptic number.

1171355963 is a deficient number, since it is larger than the sum of its proper divisors (1).

1171355963 is an equidigital number, since it uses as much as digits as its factorization.

1171355963 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 85050, while the sum is 41.

The square root of 1171355963 is about 34225.0779838410. The cubic root of 1171355963 is about 1054.1351561044.

It can be divided in two parts, 11713 and 55963, that added together give a palindrome (67676).

The spelling of 1171355963 in words is "one billion, one hundred seventy-one million, three hundred fifty-five thousand, nine hundred sixty-three".