7226189838 has 72 divisors (see below), whose sum is σ = 18800533440. Its totient is φ = 1998017280.

The previous prime is 7226189837. The next prime is 7226189843. The reversal of 7226189838 is 8389816227.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7226189833) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 104803 + ... + 159486.

It is an arithmetic number, because the mean of its divisors is an integer number (261118520).

Almost surely, 2^7226189838 is an apocalyptic number.

7226189838 is an abundant number, since it is smaller than the sum of its proper divisors (11574343602).

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

7226189838 is a wasteful number, since it uses less digits than its factorization.

7226189838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264342 (or 264332 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 54.

The square root of 7226189838 is about 85006.9987589257. The cubic root of 7226189838 is about 1933.3172334040.

The spelling of 7226189838 in words is "seven billion, two hundred twenty-six million, one hundred eighty-nine thousand, eight hundred thirty-eight".