2016644652 has 144 divisors (see below), whose sum is σ = 5910008832. Its totient is φ = 573027840.

The previous prime is 2016644627. The next prime is 2016644653. The reversal of 2016644652 is 2564466102.

2016644652 is a `hidden beast` number, since 2 + 0 + 1 + 6 + 644 + 6 + 5 + 2 = 666.

It is a super-2 number, since 2×2016644652² = 8133711304880402208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (2016644653) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3116593 + ... + 3117239.

It is an arithmetic number, because the mean of its divisors is an integer number (41041728).

Almost surely, 2^2016644652 is an apocalyptic number.

2016644652 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2016644652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2955004416).

2016644652 is an abundant number, since it is smaller than the sum of its proper divisors (3893364180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2016644652 is a wasteful number, since it uses less digits than its factorization.

2016644652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148 (or 1143 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 2016644652 is about 44907.0668380824. The cubic root of 2016644652 is about 1263.4065564330.

The spelling of 2016644652 in words is "two billion, sixteen million, six hundred forty-four thousand, six hundred fifty-two".