2193816312 has 120 divisors (see below), whose sum is σ = 6294376440. Its totient is φ = 713875680.

The previous prime is 2193816301. The next prime is 2193816343. The reversal of 2193816312 is 2136183912.

2193816312 is a `hidden beast` number, since 2 + 19 + 3 + 8 + 1 + 631 + 2 = 666.

2193816312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 1197237 + ... + 1199067.

It is an arithmetic number, because the mean of its divisors is an integer number (52453137).

Almost surely, 2^2193816312 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 2193816312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3147188220).

2193816312 is an abundant number, since it is smaller than the sum of its proper divisors (4100560128).

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

2193816312 is a wasteful number, since it uses less digits than its factorization.

2193816312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1935 (or 1879 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 2193816312 is about 46838.1928771809. The cubic root of 2193816312 is about 1299.3717500840.

The spelling of 2193816312 in words is "two billion, one hundred ninety-three million, eight hundred sixteen thousand, three hundred twelve".