188142221782 has 8 divisors (see below), whose sum is σ = 284710796136. Its totient is φ = 93238623072.

The previous prime is 188142221779. The next prime is 188142221797. The reversal of 188142221782 is 287122241881.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 416243628 + ... + 416244079.

It is an arithmetic number, because the mean of its divisors is an integer number (35588849517).

Almost surely, 2^188142221782 is an apocalyptic number.

188142221782 is a deficient number, since it is larger than the sum of its proper divisors (96568574354).

188142221782 is a wasteful number, since it uses less digits than its factorization.

188142221782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832487822.

The product of its digits is 229376, while the sum is 46.

The spelling of 188142221782 in words is "one hundred eighty-eight billion, one hundred forty-two million, two hundred twenty-one thousand, seven hundred eighty-two".