1166943380 has 24 divisors (see below), whose sum is σ = 2457867048. Its totient is φ = 465389568.

The previous prime is 1166943343. The next prime is 1166943389. The reversal of 1166943380 is 833496611.

It can be written as a sum of positive squares in 4 ways, for example, as 343138576 + 823804804 = 18524^2 + 28702^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166943389) 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, 79829 + ... + 93308.

It is an arithmetic number, because the mean of its divisors is an integer number (102411127).

Almost surely, 2^1166943380 is an apocalyptic number.

1166943380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1166943380 is an abundant number, since it is smaller than the sum of its proper divisors (1290923668).

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

1166943380 is a wasteful number, since it uses less digits than its factorization.

1166943380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173483 (or 173481 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 1166943380 is about 34160.5529814727. The cubic root of 1166943380 is about 1052.8098225976.

It can be divided in two parts, 116 and 6943380, that added together give a palindrome (6943496).

The spelling of 1166943380 in words is "one billion, one hundred sixty-six million, nine hundred forty-three thousand, three hundred eighty".