1163961886 has 4 divisors (see below), whose sum is σ = 1745942832. Its totient is φ = 581980942.

The previous prime is 1163961881. The next prime is 1163961919. The reversal of 1163961886 is 6881693611.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1163961881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 290990470 + ... + 290990473.

It is an arithmetic number, because the mean of its divisors is an integer number (436485708).

Almost surely, 2^1163961886 is an apocalyptic number.

1163961886 is a deficient number, since it is larger than the sum of its proper divisors (581980946).

1163961886 is an equidigital number, since it uses as much as digits as its factorization.

1163961886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581980945.

The product of its digits is 373248, while the sum is 49.

The square root of 1163961886 is about 34116.8856433292. The cubic root of 1163961886 is about 1051.9124287970.

The spelling of 1163961886 in words is "one billion, one hundred sixty-three million, nine hundred sixty-one thousand, eight hundred eighty-six".