1391117163 has 8 divisors (see below), whose sum is σ = 1886260800. Its totient is φ = 911692488.

The previous prime is 1391117159. The next prime is 1391117171. The reversal of 1391117163 is 3617111931.

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

It is not a de Polignac number, because 1391117163 - 2² = 1391117159 is a prime.

It is a super-2 number, since 2×1391117163² = 3870413922386337138, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1391117363) 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 in 7 ways as a sum of consecutive naturals, for example, 3929533 + ... + 3929886.

It is an arithmetic number, because the mean of its divisors is an integer number (235782600).

Almost surely, 2^1391117163 is an apocalyptic number.

1391117163 is a deficient number, since it is larger than the sum of its proper divisors (495143637).

1391117163 is an equidigital number, since it uses as much as digits as its factorization.

1391117163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7859481.

The product of its digits is 3402, while the sum is 33.

The square root of 1391117163 is about 37297.6830781752. The cubic root of 1391117163 is about 1116.3179367074.

The spelling of 1391117163 in words is "one billion, three hundred ninety-one million, one hundred seventeen thousand, one hundred sixty-three".