2168304684 has 144 divisors (see below), whose sum is σ = 6364286208. Its totient is φ = 571169088.

The previous prime is 2168304679. The next prime is 2168304701. The reversal of 2168304684 is 4864038612.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2621479 + ... + 2622305.

It is an arithmetic number, because the mean of its divisors is an integer number (44196432).

Almost surely, 2^2168304684 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2168304684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3182143104).

2168304684 is an abundant number, since it is smaller than the sum of its proper divisors (4195981524).

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

2168304684 is an equidigital number, since it uses as much as digits as its factorization.

2168304684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 882 (or 852 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 42.

The square root of 2168304684 is about 46565.0586169501. The cubic root of 2168304684 is about 1294.3153527345.

The spelling of 2168304684 in words is "two billion, one hundred sixty-eight million, three hundred four thousand, six hundred eighty-four".