1191663163 has 8 divisors (see below), whose sum is σ = 1198736000. Its totient is φ = 1184606208.

The previous prime is 1191663133. The next prime is 1191663199. The reversal of 1191663163 is 3613661911.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1191663163 - 2⁵ = 1191663131 is a prime.

It is a super-2 number, since 2×1191663163² = 2840122188102329138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1191663103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168013 + ... + 174961.

It is an arithmetic number, because the mean of its divisors is an integer number (149842000).

Almost surely, 2^1191663163 is an apocalyptic number.

1191663163 is a deficient number, since it is larger than the sum of its proper divisors (7072837).

1191663163 is an equidigital number, since it uses as much as digits as its factorization.

1191663163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7941.

The product of its digits is 17496, while the sum is 37.

The square root of 1191663163 is about 34520.4745477231. The cubic root of 1191663163 is about 1060.1919561585.

The spelling of 1191663163 in words is "one billion, one hundred ninety-one million, six hundred sixty-three thousand, one hundred sixty-three".