188816768297 has 4 divisors (see below), whose sum is σ = 188826687060. Its totient is φ = 188806849536.

The previous prime is 188816768251. The next prime is 188816768311. The reversal of 188816768297 is 792867618881.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 792867618881 = 13 ⋅60989816837.

It can be written as a sum of positive squares in 2 ways, for example, as 32427365776 + 156389402521 = 180076^2 + 395461^2 .

It is a cyclic number.

It is not a de Polignac number, because 188816768297 - 2²² = 188812573993 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 188816768297.

It is not an unprimeable number, because it can be changed into a prime (188816768207) 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, 4930772 + ... + 4968917.

It is an arithmetic number, because the mean of its divisors is an integer number (47206671765).

Almost surely, 2^188816768297 is an apocalyptic number.

It is an amenable number.

188816768297 is a deficient number, since it is larger than the sum of its proper divisors (9918763).

188816768297 is an equidigital number, since it uses as much as digits as its factorization.

188816768297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9918762.

The product of its digits is 130056192, while the sum is 71.

The spelling of 188816768297 in words is "one hundred eighty-eight billion, eight hundred sixteen million, seven hundred sixty-eight thousand, two hundred ninety-seven".