2016945872 has 20 divisors (see below), whose sum is σ = 3917399940. Its totient is φ = 1006003968.

The previous prime is 2016945871. The next prime is 2016945881. The reversal of 2016945872 is 2785496102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1713628816 + 303317056 = 41396^2 + 17416^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2016945871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147563 + ... + 160650.

It is an arithmetic number, because the mean of its divisors is an integer number (195869997).

Almost surely, 2^2016945872 is an apocalyptic number.

It is an amenable number.

2016945872 is a deficient number, since it is larger than the sum of its proper divisors (1900454068).

2016945872 is a wasteful number, since it uses less digits than its factorization.

2016945872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308630 (or 308624 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 2016945872 is about 44910.4205279799. The cubic root of 2016945872 is about 1263.4694570166.

The spelling of 2016945872 in words is "two billion, sixteen million, nine hundred forty-five thousand, eight hundred seventy-two".