2265421188 has 48 divisors (see below), whose sum is σ = 5571478080. Its totient is φ = 715338624.

The previous prime is 2265421187. The next prime is 2265421189. The reversal of 2265421188 is 8811245622.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2265421187) and next prime (2265421189).

It is not an unprimeable number, because it can be changed into a prime (2265421187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42970 + ... + 79857.

It is an arithmetic number, because the mean of its divisors is an integer number (116072460).

Almost surely, 2^2265421188 is an apocalyptic number.

It is an amenable number.

2265421188 is an abundant number, since it is smaller than the sum of its proper divisors (3306056892).

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

2265421188 is a wasteful number, since it uses less digits than its factorization.

2265421188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122916 (or 122914 counting only the distinct ones).

The product of its digits is 61440, while the sum is 39.

The square root of 2265421188 is about 47596.4409173627. The cubic root of 2265421188 is about 1313.3575832456.

The spelling of 2265421188 in words is "two billion, two hundred sixty-five million, four hundred twenty-one thousand, one hundred eighty-eight".