2813949684 has 144 divisors (see below), whose sum is σ = 9269664768. Its totient is φ = 698471424.

The previous prime is 2813949661. The next prime is 2813949689. The reversal of 2813949684 is 4869493182.

It is a self number, because there is not a number n which added to its sum of digits gives 2813949684.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2813949689) 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, 30429 + ... + 80955.

It is an arithmetic number, because the mean of its divisors is an integer number (64372672).

Almost surely, 2^2813949684 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 2813949684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4634832384).

2813949684 is an abundant number, since it is smaller than the sum of its proper divisors (6455715084).

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

2813949684 is a wasteful number, since it uses less digits than its factorization.

2813949684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50574 (or 50569 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 54.

The square root of 2813949684 is about 53046.6745800338. The cubic root of 2813949684 is about 1411.7965269752.

The spelling of 2813949684 in words is "two billion, eight hundred thirteen million, nine hundred forty-nine thousand, six hundred eighty-four".