188998421102 has 4 divisors (see below), whose sum is σ = 283497631656. Its totient is φ = 94499210550.

The previous prime is 188998421041. The next prime is 188998421219. The reversal of 188998421102 is 201124899881.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47249605274 + ... + 47249605277.

It is an arithmetic number, because the mean of its divisors is an integer number (70874407914).

Almost surely, 2^188998421102 is an apocalyptic number.

188998421102 is a deficient number, since it is larger than the sum of its proper divisors (94499210554).

188998421102 is an equidigital number, since it uses as much as digits as its factorization.

188998421102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94499210553.

The product of its (nonzero) digits is 663552, while the sum is 53.

The spelling of 188998421102 in words is "one hundred eighty-eight billion, nine hundred ninety-eight million, four hundred twenty-one thousand, one hundred two".