2081266444 has 6 divisors (see below), whose sum is σ = 3642216284. Its totient is φ = 1040633220.

The previous prime is 2081266399. The next prime is 2081266459. The reversal of 2081266444 is 4446621802.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260158302 + ... + 260158309.

Almost surely, 2^2081266444 is an apocalyptic number.

It is an amenable number.

2081266444 is a deficient number, since it is larger than the sum of its proper divisors (1560949840).

2081266444 is a wasteful number, since it uses less digits than its factorization.

2081266444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520316615 (or 520316613 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 37.

The square root of 2081266444 is about 45620.8992020105. The cubic root of 2081266444 is about 1276.7598804233.

The spelling of 2081266444 in words is "two billion, eighty-one million, two hundred sixty-six thousand, four hundred forty-four".