2811191604 has 96 divisors (see below), whose sum is σ = 7498552320. Its totient is φ = 812034048.

The previous prime is 2811191597. The next prime is 2811191623. The reversal of 2811191604 is 4061911182.

2811191604 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 a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1269202 + ... + 1271414.

It is an arithmetic number, because the mean of its divisors is an integer number (78109920).

Almost surely, 2^2811191604 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 2811191604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3749276160).

2811191604 is an abundant number, since it is smaller than the sum of its proper divisors (4687360716).

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

2811191604 is a wasteful number, since it uses less digits than its factorization.

2811191604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2729 (or 2727 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 33.

The square root of 2811191604 is about 53020.6714782074. The cubic root of 2811191604 is about 1411.3351208764.

The spelling of 2811191604 in words is "two billion, eight hundred eleven million, one hundred ninety-one thousand, six hundred four".