2166250366 has 32 divisors (see below), whose sum is σ = 3797256960. Its totient is φ = 907704576.

The previous prime is 2166250349. The next prime is 2166250391. The reversal of 2166250366 is 6630526612.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103105 + ... + 122323.

It is an arithmetic number, because the mean of its divisors is an integer number (118664280).

Almost surely, 2^2166250366 is an apocalyptic number.

2166250366 is a deficient number, since it is larger than the sum of its proper divisors (1631006594).

2166250366 is a wasteful number, since it uses less digits than its factorization.

2166250366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19408.

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 2166250366 is about 46542.9948112495. The cubic root of 2166250366 is about 1293.9064656275.

Adding to 2166250366 its reverse (6630526612), we get a palindrome (8796776978).

The spelling of 2166250366 in words is "two billion, one hundred sixty-six million, two hundred fifty thousand, three hundred sixty-six".