1166212944 has 160 divisors (see below), whose sum is σ = 3622684800. Its totient is φ = 357073920.

The previous prime is 1166212891. The next prime is 1166212981. The reversal of 1166212944 is 4492126611.

1166212944 is a `hidden beast` number, since 1 + 1 + 6 + 621 + 29 + 4 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1166212899 and 1166212908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1577727 + ... + 1578465.

It is an arithmetic number, because the mean of its divisors is an integer number (22641780).

Almost surely, 2^1166212944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1166212944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1811342400).

1166212944 is an abundant number, since it is smaller than the sum of its proper divisors (2456471856).

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

1166212944 is a wasteful number, since it uses less digits than its factorization.

1166212944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050 (or 1038 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 1166212944 is about 34149.8600875611. The cubic root of 1166212944 is about 1052.5901116514.

The spelling of 1166212944 in words is "one billion, one hundred sixty-six million, two hundred twelve thousand, nine hundred forty-four".