100111189 has 2 divisors, whose sum is σ = 100111190. Its totient is φ = 100111188.

The previous prime is 100111169. The next prime is 100111229. The reversal of 100111189 is 981111001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74960964 + 25150225 = 8658^2 + 5015^2 .

It is a cyclic number.

It is not a de Polignac number, because 100111189 - 2⁷ = 100111061 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 (100111169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50055594 + 50055595.

It is an arithmetic number, because the mean of its divisors is an integer number (50055595).

Almost surely, 2^100111189 is an apocalyptic number.

It is an amenable number.

100111189 is a deficient number, since it is larger than the sum of its proper divisors (1).

100111189 is an equidigital number, since it uses as much as digits as its factorization.

100111189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 22.

The square root of 100111189 is about 10005.5579054843. The cubic root of 100111189 is about 464.3308508476.

The spelling of 100111189 in words is "one hundred million, one hundred eleven thousand, one hundred eighty-nine".