1805820944 has 10 divisors (see below), whose sum is σ = 3498778110. Its totient is φ = 902910464.

The previous prime is 1805820943. The next prime is 1805820979. The reversal of 1805820944 is 4490285081.

It can be written as a sum of positive squares in only one way, i.e., 1655513344 + 150307600 = 40688^2 + 12260^2 .

It is a super-2 number, since 2×1805820944² = 6521978563578102272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1805820943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56431889 + ... + 56431920.

It is an arithmetic number, because the mean of its divisors is an integer number (349877811).

Almost surely, 2^1805820944 is an apocalyptic number.

It is an amenable number.

1805820944 is a deficient number, since it is larger than the sum of its proper divisors (1692957166).

1805820944 is a wasteful number, since it uses less digits than its factorization.

1805820944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112863817 (or 112863811 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 41.

The square root of 1805820944 is about 42494.9519825591. The cubic root of 1805820944 is about 1217.7502532490.

The spelling of 1805820944 in words is "one billion, eight hundred five million, eight hundred twenty thousand, nine hundred forty-four".