1812452244 has 12 divisors (see below), whose sum is σ = 4229055264. Its totient is φ = 604150744.

The previous prime is 1812452221. The next prime is 1812452261. The reversal of 1812452244 is 4422542181.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75518832 + ... + 75518855.

It is an arithmetic number, because the mean of its divisors is an integer number (352421272).

Almost surely, 2^1812452244 is an apocalyptic number.

It is an amenable number.

1812452244 is an abundant number, since it is smaller than the sum of its proper divisors (2416603020).

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

1812452244 is a wasteful number, since it uses less digits than its factorization.

1812452244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151037694 (or 151037692 counting only the distinct ones).

The product of its digits is 20480, while the sum is 33.

The square root of 1812452244 is about 42572.9050453454. The cubic root of 1812452244 is about 1219.2390318542.

The spelling of 1812452244 in words is "one billion, eight hundred twelve million, four hundred fifty-two thousand, two hundred forty-four".