1865220224682 has 16 divisors (see below), whose sum is σ = 3949878123072. Its totient is φ = 585167129280.

The previous prime is 1865220224617. The next prime is 1865220224683. The reversal of 1865220224682 is 2864220225681.

It is a happy number.

It is a super-2 number, since 2×1865220224682² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1865220224683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9143236294 + ... + 9143236497.

It is an arithmetic number, because the mean of its divisors is an integer number (246867382692).

Almost surely, 2^{1865220224682} is an apocalyptic number.

1865220224682 is an abundant number, since it is smaller than the sum of its proper divisors (2084657898390).

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

1865220224682 is a wasteful number, since it uses less digits than its factorization.

1865220224682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18286472813.

The product of its (nonzero) digits is 1474560, while the sum is 48.

Subtracting 1865220224682 from its reverse (2864220225681), we obtain a palindrome (999000000999).

The spelling of 1865220224682 in words is "one trillion, eight hundred sixty-five billion, two hundred twenty million, two hundred twenty-four thousand, six hundred eighty-two".