18180800627 has 16 divisors (see below), whose sum is σ = 20046299904. Its totient is φ = 16351020000.

The previous prime is 18180800623. The next prime is 18180800647. The reversal of 18180800627 is 72600808181.

It is a cyclic number.

It is not a de Polignac number, because 18180800627 - 2² = 18180800623 is a prime.

It is a super-2 number, since 2×18180800627² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18180800621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1512752 + ... + 1524722.

It is an arithmetic number, because the mean of its divisors is an integer number (1252893744).

Almost surely, 2^18180800627 is an apocalyptic number.

18180800627 is a deficient number, since it is larger than the sum of its proper divisors (1865499277).

18180800627 is a wasteful number, since it uses less digits than its factorization.

18180800627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13450.

The product of its (nonzero) digits is 43008, while the sum is 41.

It can be divided in two parts, 181 and 80800627, that added together give a palindrome (80800808).

The spelling of 18180800627 in words is "eighteen billion, one hundred eighty million, eight hundred thousand, six hundred twenty-seven".