18187822088 has 12 divisors (see below), whose sum is σ = 34102881645. Its totient is φ = 9093720320.

The previous prime is 18187822087. The next prime is 18187822111. The reversal of 18187822088 is 88022878181.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 16225154884 + 1962667204 = 127378^2 + 44302^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=95362.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18187822087) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 357608 + ... + 405288.

Almost surely, 2^18187822088 is an apocalyptic number.

It is an amenable number.

18187822088 is a deficient number, since it is larger than the sum of its proper divisors (15915059557).

18187822088 is an frugal number, since it uses more digits than its factorization.

18187822088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95368 (or 47683 counting only the distinct ones).

The product of its (nonzero) digits is 917504, while the sum is 53.

The spelling of 18187822088 in words is "eighteen billion, one hundred eighty-seven million, eight hundred twenty-two thousand, eighty-eight".