2168016813 has 32 divisors (see below), whose sum is σ = 3331499520. Its totient is φ = 1392292800.

The previous prime is 2168016751. The next prime is 2168016827. The reversal of 2168016813 is 3186108612.

2168016813 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2168016813 - 2¹⁰ = 2168015789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2168016313) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90156 + ... + 111642.

It is an arithmetic number, because the mean of its divisors is an integer number (104109360).

Almost surely, 2^2168016813 is an apocalyptic number.

It is an amenable number.

2168016813 is a deficient number, since it is larger than the sum of its proper divisors (1163482707).

2168016813 is a wasteful number, since it uses less digits than its factorization.

2168016813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21634 (or 21628 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 2168016813 is about 46561.9674519881. The cubic root of 2168016813 is about 1294.2580710637.

The spelling of 2168016813 in words is "two billion, one hundred sixty-eight million, sixteen thousand, eight hundred thirteen".