188768231 has 2 divisors, whose sum is σ = 188768232. Its totient is φ = 188768230.

The previous prime is 188768219. The next prime is 188768233. The reversal of 188768231 is 132867881.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 188768231 - 2¹⁴ = 188751847 is a prime.

It is a super-2 number, since 2×188768231² = 71266890069738722, which contains 22 as substring.

Together with 188768233, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (188768233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94384115 + 94384116.

It is an arithmetic number, because the mean of its divisors is an integer number (94384116).

Almost surely, 2^188768231 is an apocalyptic number.

188768231 is a deficient number, since it is larger than the sum of its proper divisors (1).

188768231 is an equidigital number, since it uses as much as digits as its factorization.

188768231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129024, while the sum is 44.

The square root of 188768231 is about 13739.2951420369. The cubic root of 188768231 is about 573.6446778478.

The spelling of 188768231 in words is "one hundred eighty-eight million, seven hundred sixty-eight thousand, two hundred thirty-one".