1805888226 has 16 divisors (see below), whose sum is σ = 3618878400. Its totient is φ = 600779088.

The previous prime is 1805888221. The next prime is 1805888233. The reversal of 1805888226 is 6228885081.

It is a happy number.

It is a super-2 number, since 2×1805888226² = 6522464569610854152, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1805888221) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 292606 + ... + 298713.

It is an arithmetic number, because the mean of its divisors is an integer number (226179900).

Almost surely, 2^1805888226 is an apocalyptic number.

1805888226 is an abundant number, since it is smaller than the sum of its proper divisors (1812990174).

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

1805888226 is a wasteful number, since it uses less digits than its factorization.

1805888226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591833.

The product of its (nonzero) digits is 491520, while the sum is 48.

The square root of 1805888226 is about 42495.7436221559. The cubic root of 1805888226 is about 1217.7653768701.

The spelling of 1805888226 in words is "one billion, eight hundred five million, eight hundred eighty-eight thousand, two hundred twenty-six".