1805225868 has 36 divisors (see below), whose sum is σ = 4565939560. Its totient is φ = 601382016.

The previous prime is 1805225861. The next prime is 1805225881. The reversal of 1805225868 is 8685225081.

1805225868 is a `hidden beast` number, since 18 + 0 + 52 + 2 + 586 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (1805225861) 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 11 ways as a sum of consecutive naturals, for example, 49863 + ... + 78081.

Almost surely, 2^1805225868 is an apocalyptic number.

1805225868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1805225868 is an abundant number, since it is smaller than the sum of its proper divisors (2760713692).

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

1805225868 is a wasteful number, since it uses less digits than its factorization.

1805225868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30006 (or 30001 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 45.

The square root of 1805225868 is about 42487.9496798798. The cubic root of 1805225868 is about 1217.6164759467.

The spelling of 1805225868 in words is "one billion, eight hundred five million, two hundred twenty-five thousand, eight hundred sixty-eight".