188351381242 has 8 divisors (see below), whose sum is σ = 282537025632. Its totient is φ = 94172372700.

The previous prime is 188351381233. The next prime is 188351381243. The reversal of 188351381242 is 242183153881.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 188351381192 and 188351381201.

It is not an unprimeable number, because it can be changed into a prime (188351381243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1587384 + ... + 1701907.

It is an arithmetic number, because the mean of its divisors is an integer number (35317128204).

Almost surely, 2^188351381242 is an apocalyptic number.

188351381242 is a deficient number, since it is larger than the sum of its proper divisors (94185644390).

188351381242 is a wasteful number, since it uses less digits than its factorization.

188351381242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3317924.

The product of its digits is 368640, while the sum is 46.

The spelling of 188351381242 in words is "one hundred eighty-eight billion, three hundred fifty-one million, three hundred eighty-one thousand, two hundred forty-two".