1865372226 has 32 divisors (see below), whose sum is σ = 3952385280. Its totient is φ = 584891136.

The previous prime is 1865372219. The next prime is 1865372239. The reversal of 1865372226 is 6222735681.

1865372226 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1865372226² = 6959227083064390152, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 236535 + ... + 244293.

It is an arithmetic number, because the mean of its divisors is an integer number (123512040).

Almost surely, 2^1865372226 is an apocalyptic number.

1865372226 is an abundant number, since it is smaller than the sum of its proper divisors (2087013054).

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

1865372226 is a wasteful number, since it uses less digits than its factorization.

1865372226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10138.

The product of its digits is 241920, while the sum is 42.

The square root of 1865372226 is about 43189.9551516322. The cubic root of 1865372226 is about 1230.9918247760.

The spelling of 1865372226 in words is "one billion, eight hundred sixty-five million, three hundred seventy-two thousand, two hundred twenty-six".