188881818188882 has 64 divisors (see below), whose sum is σ = 363965126160384. Its totient is φ = 71454198530880.

The previous prime is 188881818188881. The next prime is 188881818188909. The reversal of 188881818188882 is 288881818188881.

It is a junction number, because it is equal to n+sod(n) for n = 188881818188794 and 188881818188803.

It is not an unprimeable number, because it can be changed into a prime (188881818188881) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9221033 + ... + 21512579.

It is an arithmetic number, because the mean of its divisors is an integer number (5686955096256).

Almost surely, 2^{188881818188882} is an apocalyptic number.

188881818188882 is a deficient number, since it is larger than the sum of its proper divisors (175083307971502).

188881818188882 is a wasteful number, since it uses less digits than its factorization.

188881818188882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12295263.

The product of its digits is 2147483648, while the sum is 86.

Subtracting 188881818188882 from its reverse (288881818188881), we obtain a palindrome (99999999999999).

The spelling of 188881818188882 in words is "one hundred eighty-eight trillion, eight hundred eighty-one billion, eight hundred eighteen million, one hundred eighty-eight thousand, eight hundred eighty-two".