1166881836 has 48 divisors (see below), whose sum is σ = 2885301216. Its totient is φ = 365773824.

The previous prime is 1166881829. The next prime is 1166881843. The reversal of 1166881836 is 6381886611.

It is an interprime number because it is at equal distance from previous prime (1166881829) and next prime (1166881843).

It is a super-2 number, since 2×1166881836² = 2723226438373461792, which contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 455070 + ... + 457626.

It is an arithmetic number, because the mean of its divisors is an integer number (60110442).

Almost surely, 2^1166881836 is an apocalyptic number.

It is an amenable number.

1166881836 is an abundant number, since it is smaller than the sum of its proper divisors (1718419380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1166881836 is a wasteful number, since it uses less digits than its factorization.

1166881836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4818 (or 4816 counting only the distinct ones).

The product of its digits is 331776, while the sum is 48.

The square root of 1166881836 is about 34159.6521645054. The cubic root of 1166881836 is about 1052.7913140541.

The spelling of 1166881836 in words is "one billion, one hundred sixty-six million, eight hundred eighty-one thousand, eight hundred thirty-six".