188000101 has 4 divisors (see below), whose sum is σ = 188027532. Its totient is φ = 187972672.

The previous prime is 188000077. The next prime is 188000143. The reversal of 188000101 is 101000881.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 12967201 + 175032900 = 3601^2 + 13230^2 .

It is a cyclic number.

It is not a de Polignac number, because 188000101 - 2⁹ = 187999589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188000201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6381 + ... + 20413.

It is an arithmetic number, because the mean of its divisors is an integer number (47006883).

Almost surely, 2^188000101 is an apocalyptic number.

It is an amenable number.

188000101 is a deficient number, since it is larger than the sum of its proper divisors (27431).

188000101 is a wasteful number, since it uses less digits than its factorization.

188000101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27430.

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

The square root of 188000101 is about 13711.3128838926. The cubic root of 188000101 is about 572.8655341858.

Adding to 188000101 its reverse (101000881), we get a palindrome (289000982).

The spelling of 188000101 in words is "one hundred eighty-eight million, one hundred one", and thus it is an aban number.