1123005866 has 16 divisors (see below), whose sum is σ = 1781832384. Its totient is φ = 529730784.

The previous prime is 1123005841. The next prime is 1123005869. The reversal of 1123005866 is 6685003211.

It is a happy number.

It is a super-2 number, since 2×1123005866² = 2522284350140819912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1123005869) 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, 163856 + ... + 170571.

It is an arithmetic number, because the mean of its divisors is an integer number (111364524).

Almost surely, 2^1123005866 is an apocalyptic number.

1123005866 is a deficient number, since it is larger than the sum of its proper divisors (658826518).

1123005866 is a wasteful number, since it uses less digits than its factorization.

1123005866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334525.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 1123005866 is about 33511.2796831157. The cubic root of 1123005866 is about 1039.4270346170.

The spelling of 1123005866 in words is "one billion, one hundred twenty-three million, five thousand, eight hundred sixty-six".