1094581866 has 64 divisors (see below), whose sum is σ = 2545551360. Its totient is φ = 307312320.

The previous prime is 1094581861. The next prime is 1094581877. The reversal of 1094581866 is 6681854901.

1094581866 is a nontrivial binomial coefficient, being equal to C(46789, 2).

It is a super-2 number, since 2×1094581866² = 2396218922752083912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1094581861) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1660645 + ... + 1661303.

It is an arithmetic number, because the mean of its divisors is an integer number (39774240).

Almost surely, 2^1094581866 is an apocalyptic number.

1094581866 is the 46788-th triangular number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1094581866, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1272775680).

1094581866 is an abundant number, since it is smaller than the sum of its proper divisors (1450969494).

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

1094581866 is a wasteful number, since it uses less digits than its factorization.

1094581866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1299.

The product of its (nonzero) digits is 414720, while the sum is 48.

The square root of 1094581866 is about 33084.4656296577. The cubic root of 1094581866 is about 1030.5824669196.

The spelling of 1094581866 in words is "one billion, ninety-four million, five hundred eighty-one thousand, eight hundred sixty-six".