188214013709 has 4 divisors (see below), whose sum is σ = 188772512604. Its totient is φ = 187655514816.

The previous prime is 188214013697. The next prime is 188214013727. The reversal of 188214013709 is 907310412881.

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

It can be written as a sum of positive squares in 2 ways, for example, as 128555951209 + 59658062500 = 358547^2 + 244250^2 .

It is a cyclic number.

It is not a de Polignac number, because 188214013709 - 2³² = 183919046413 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 188214013709.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188214013909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 279248942 + ... + 279249615.

It is an arithmetic number, because the mean of its divisors is an integer number (47193128151).

Almost surely, 2^188214013709 is an apocalyptic number.

It is an amenable number.

188214013709 is a deficient number, since it is larger than the sum of its proper divisors (558498895).

188214013709 is an equidigital number, since it uses as much as digits as its factorization.

188214013709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558498894.

The product of its (nonzero) digits is 96768, while the sum is 44.

The spelling of 188214013709 in words is "one hundred eighty-eight billion, two hundred fourteen million, thirteen thousand, seven hundred nine".