188505101 has 2 divisors, whose sum is σ = 188505102. Its totient is φ = 188505100.

The previous prime is 188505073. The next prime is 188505143. The reversal of 188505101 is 101505881.

188505101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141253225 + 47251876 = 11885^2 + 6874^2 .

It is an emirp because it is prime and its reverse (101505881) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 188505101 - 2¹⁴ = 188488717 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (188505151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94252550 + 94252551.

It is an arithmetic number, because the mean of its divisors is an integer number (94252551).

Almost surely, 2^188505101 is an apocalyptic number.

It is an amenable number.

188505101 is a deficient number, since it is larger than the sum of its proper divisors (1).

188505101 is an equidigital number, since it uses as much as digits as its factorization.

188505101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1600, while the sum is 29.

The square root of 188505101 is about 13729.7159839525. The cubic root of 188505101 is about 573.3780134265.

The spelling of 188505101 in words is "one hundred eighty-eight million, five hundred five thousand, one hundred one".