7242228918 has 12 divisors (see below), whose sum is σ = 15691496028. Its totient is φ = 2414076300.

The previous prime is 7242228911. The next prime is 7242228941. The reversal of 7242228918 is 8198222427.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7242228911) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 201173008 + ... + 201173043.

It is an arithmetic number, because the mean of its divisors is an integer number (1307624669).

Almost surely, 2^7242228918 is an apocalyptic number.

7242228918 is an abundant number, since it is smaller than the sum of its proper divisors (8449267110).

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

7242228918 is a wasteful number, since it uses less digits than its factorization.

7242228918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402346059 (or 402346056 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 7242228918 is about 85101.2862299977. The cubic root of 7242228918 is about 1934.7465581569.

The spelling of 7242228918 in words is "seven billion, two hundred forty-two million, two hundred twenty-eight thousand, nine hundred eighteen".