3812222394 has 56 divisors (see below), whose sum is σ = 8782827732. Its totient is φ = 1239727680.

The previous prime is 3812222357. The next prime is 3812222399. The reversal of 3812222394 is 4932222183.

3812222394 is a `hidden beast` number, since 38 + 12 + 222 + 394 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2718266769 + 1093955625 = 52137^2 + 33075^2 .

It is a super-3 number, since 3×3812222394³ (a number of 30 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (3812222399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 27892 + ... + 91664.

Almost surely, 2^3812222394 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3812222394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4391413866).

3812222394 is an abundant number, since it is smaller than the sum of its proper divisors (4970605338).

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

3812222394 is an equidigital number, since it uses as much as digits as its factorization.

3812222394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63834 (or 63819 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 3812222394 is about 61743.1971475401. The cubic root of 3812222394 is about 1562.1620244271.

It can be divided in two parts, 38122 and 22394, that added together give a square (60516 = 246²).

The spelling of 3812222394 in words is "three billion, eight hundred twelve million, two hundred twenty-two thousand, three hundred ninety-four".