222145518 has 24 divisors (see below), whose sum is σ = 516829032. Its totient is φ = 63470064.

The previous prime is 222145501. The next prime is 222145519. The reversal of 222145518 is 815541222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222145519) 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 11 ways as a sum of consecutive naturals, for example, 377505 + ... + 378092.

It is an arithmetic number, because the mean of its divisors is an integer number (21534543).

Almost surely, 2^222145518 is an apocalyptic number.

222145518 is an abundant number, since it is smaller than the sum of its proper divisors (294683514).

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

222145518 is a wasteful number, since it uses less digits than its factorization.

222145518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755616 (or 755609 counting only the distinct ones).

The product of its digits is 6400, while the sum is 30.

The square root of 222145518 is about 14904.5468901272. The cubic root of 222145518 is about 605.6371658466.

The spelling of 222145518 in words is "two hundred twenty-two million, one hundred forty-five thousand, five hundred eighteen".