2081388752 has 20 divisors (see below), whose sum is σ = 4074267876. Its totient is φ = 1029964800.

The previous prime is 2081388737. The next prime is 2081388769. The reversal of 2081388752 is 2578831802.

It can be written as a sum of positive squares in 2 ways, for example, as 427827856 + 1653560896 = 20684^2 + 40664^2 .

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, 668999 + ... + 672102.

Almost surely, 2^2081388752 is an apocalyptic number.

It is an amenable number.

2081388752 is a deficient number, since it is larger than the sum of its proper divisors (1992879124).

2081388752 is a wasteful number, since it uses less digits than its factorization.

2081388752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1341206 (or 1341200 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 44.

The square root of 2081388752 is about 45622.2396644444. The cubic root of 2081388752 is about 1276.7848900176.

The spelling of 2081388752 in words is "two billion, eighty-one million, three hundred eighty-eight thousand, seven hundred fifty-two".