2201901844 has 12 divisors (see below), whose sum is σ = 3858974784. Its totient is φ = 1099337624.

The previous prime is 2201901799. The next prime is 2201901859. The reversal of 2201901844 is 4481091022.

It is a super-2 number, since 2×2201901844² = 9696743461221200672, which contains 22 as substring.

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, 400252 + ... + 405715.

It is an arithmetic number, because the mean of its divisors is an integer number (321581232).

Almost surely, 2^2201901844 is an apocalyptic number.

It is an amenable number.

2201901844 is a deficient number, since it is larger than the sum of its proper divisors (1657072940).

2201901844 is a wasteful number, since it uses less digits than its factorization.

2201901844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806654 (or 806652 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 2201901844 is about 46924.4269437571. The cubic root of 2201901844 is about 1300.9661149750.

Adding to 2201901844 its reverse (4481091022), we get a palindrome (6682992866).

The spelling of 2201901844 in words is "two billion, two hundred one million, nine hundred one thousand, eight hundred forty-four".