188011 has 2 divisors, whose sum is σ = 188012. Its totient is φ = 188010.

The previous prime is 187987. The next prime is 188017. The reversal of 188011 is 110881.

It is a strong prime.

It is an emirp because it is prime and its reverse (110881) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 188011 - 2⁷ = 187883 is a prime.

It is a super-2 number, since 2×188011² = 70696272242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 188011.

It is not a weakly prime, because it can be changed into another prime (188017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94005 + 94006.

It is an arithmetic number, because the mean of its divisors is an integer number (94006).

2¹⁸⁸⁰¹¹ is an apocalyptic number.

188011 is a deficient number, since it is larger than the sum of its proper divisors (1).

188011 is an equidigital number, since it uses as much as digits as its factorization.

188011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 19.

The square root of 188011 is about 433.6023523921. The cubic root of 188011 is about 57.2876604288.

Adding to 188011 its reverse (110881), we get a palindrome (298892).

It can be divided in two parts, 1880 and 11, that added together give a triangular number (1891 = T₆₁).

The spelling of 188011 in words is "one hundred eighty-eight thousand, eleven".