1840904226 has 96 divisors (see below), whose sum is σ = 4848958080. Its totient is φ = 516009312.

The previous prime is 1840904183. The next prime is 1840904249. The reversal of 1840904226 is 6224090481.

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 47 ways as a sum of consecutive naturals, for example, 133675 + ... + 146801.

It is an arithmetic number, because the mean of its divisors is an integer number (50509980).

Almost surely, 2^1840904226 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1840904226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2424479040).

1840904226 is an abundant number, since it is smaller than the sum of its proper divisors (3008053854).

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

1840904226 is a wasteful number, since it uses less digits than its factorization.

1840904226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13205 (or 13192 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 1840904226 is about 42905.7598231286. The cubic root of 1840904226 is about 1225.5858313580.

The spelling of 1840904226 in words is "one billion, eight hundred forty million, nine hundred four thousand, two hundred twenty-six".