188218322723434 has 4 divisors (see below), whose sum is σ = 282327484085154. Its totient is φ = 94109161361716.

The previous prime is 188218322723429. The next prime is 188218322723443. The reversal of 188218322723434 is 434327223812881.

188218322723434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 183701834932225 + 4516487791209 = 13553665^2 + 2125203^2 .

It is a super-2 number, since 2×188218322723434² (a number of 29 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47054580680857 + ... + 47054580680860.

Almost surely, 2^{188218322723434} is an apocalyptic number.

188218322723434 is a deficient number, since it is larger than the sum of its proper divisors (94109161361720).

188218322723434 is an equidigital number, since it uses as much as digits as its factorization.

188218322723434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94109161361719.

The product of its digits is 24772608, while the sum is 58.

The spelling of 188218322723434 in words is "one hundred eighty-eight trillion, two hundred eighteen billion, three hundred twenty-two million, seven hundred twenty-three thousand, four hundred thirty-four".