2013217644 has 24 divisors (see below), whose sum is σ = 4700063088. Its totient is φ = 670707520.

The previous prime is 2013217643. The next prime is 2013217651. The reversal of 2013217644 is 4467123102.

It is a super-2 number, since 2×2013217644² = 8106090564225821472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2013217643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22167 + ... + 67214.

It is an arithmetic number, because the mean of its divisors is an integer number (195835962).

Almost surely, 2^2013217644 is an apocalyptic number.

It is an amenable number.

2013217644 is an abundant number, since it is smaller than the sum of its proper divisors (2686845444).

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

2013217644 is a wasteful number, since it uses less digits than its factorization.

2013217644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91265 (or 91263 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 2013217644 is about 44868.8939466976. The cubic root of 2013217644 is about 1262.6904892324.

The spelling of 2013217644 in words is "two billion, thirteen million, two hundred seventeen thousand, six hundred forty-four".