2001716788 has 12 divisors (see below), whose sum is σ = 3514057092. Its totient is φ = 997700480.

The previous prime is 2001716753. The next prime is 2001716789. The reversal of 2001716788 is 8876171002.

It can be written as a sum of positive squares in 2 ways, for example, as 625900324 + 1375816464 = 25018^2 + 37092^2 .

It is a super-2 number, since 2×2001716788² = 8013740198722073888, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2001716788.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001716789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 788053 + ... + 790588.

It is an arithmetic number, because the mean of its divisors is an integer number (292838091).

Almost surely, 2^2001716788 is an apocalyptic number.

It is an amenable number.

2001716788 is a deficient number, since it is larger than the sum of its proper divisors (1512340304).

2001716788 is a wasteful number, since it uses less digits than its factorization.

2001716788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1578962 (or 1578960 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 40.

The square root of 2001716788 is about 44740.5497060552. The cubic root of 2001716788 is about 1260.2814496828.

The spelling of 2001716788 in words is "two billion, one million, seven hundred sixteen thousand, seven hundred eighty-eight".