1166681382 has 16 divisors (see below), whose sum is σ = 2354013360. Its totient is φ = 385452032.

The previous prime is 1166681381. The next prime is 1166681387. The reversal of 1166681382 is 2831866611.

It is a super-2 number, since 2×1166681382² = 2722290894210859848, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) 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 (1166681381) 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, 859707 + ... + 861062.

It is an arithmetic number, because the mean of its divisors is an integer number (147125835).

Almost surely, 2^1166681382 is an apocalyptic number.

1166681382 is an abundant number, since it is smaller than the sum of its proper divisors (1187331978).

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

1166681382 is a wasteful number, since it uses less digits than its factorization.

1166681382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1720887.

The product of its digits is 82944, while the sum is 42.

The square root of 1166681382 is about 34156.7179629425. The cubic root of 1166681382 is about 1052.7310256545.

The spelling of 1166681382 in words is "one billion, one hundred sixty-six million, six hundred eighty-one thousand, three hundred eighty-two".