1816852444 has 24 divisors (see below), whose sum is σ = 3476810736. Its totient is φ = 823872000.

The previous prime is 1816852423. The next prime is 1816852481. The reversal of 1816852444 is 4442586181.

It is a self number, because there is not a number n which added to its sum of digits gives 1816852444.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30517 + ... + 67564.

It is an arithmetic number, because the mean of its divisors is an integer number (144867114).

Almost surely, 2^1816852444 is an apocalyptic number.

It is an amenable number.

1816852444 is a deficient number, since it is larger than the sum of its proper divisors (1659958292).

1816852444 is a wasteful number, since it uses less digits than its factorization.

1816852444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98517 (or 98515 counting only the distinct ones).

The product of its digits is 245760, while the sum is 43.

The square root of 1816852444 is about 42624.5521266793. The cubic root of 1816852444 is about 1220.2249079219.

The spelling of 1816852444 in words is "one billion, eight hundred sixteen million, eight hundred fifty-two thousand, four hundred forty-four".