1181916963 has 24 divisors (see below), whose sum is σ = 1789547760. Its totient is φ = 750839040.

The previous prime is 1181916899. The next prime is 1181916973. The reversal of 1181916963 is 3696191811.

1181916963 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1181916963 - 2⁶ = 1181916899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1181916973) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21378 + ... + 53111.

It is an arithmetic number, because the mean of its divisors is an integer number (74564490).

Almost surely, 2^1181916963 is an apocalyptic number.

1181916963 is a deficient number, since it is larger than the sum of its proper divisors (607630797).

1181916963 is a wasteful number, since it uses less digits than its factorization.

1181916963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74579 (or 74576 counting only the distinct ones).

The product of its digits is 69984, while the sum is 45.

The square root of 1181916963 is about 34379.0192268482. The cubic root of 1181916963 is about 1057.2937263451.

It can be divided in two parts, 11819 and 16963, that added together give a palindrome (28782).

The spelling of 1181916963 in words is "one billion, one hundred eighty-one million, nine hundred sixteen thousand, nine hundred sixty-three".