189500000111 has 2 divisors, whose sum is σ = 189500000112. Its totient is φ = 189500000110.

The previous prime is 189500000087. The next prime is 189500000113. The reversal of 189500000111 is 111000005981.

It is a strong prime.

It is an emirp because it is prime and its reverse (111000005981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 189500000111 - 2¹⁴ = 189499983727 is a prime.

Together with 189500000113, 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 (189500000113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94750000055 + 94750000056.

It is an arithmetic number, because the mean of its divisors is an integer number (94750000056).

Almost surely, 2^189500000111 is an apocalyptic number.

189500000111 is a deficient number, since it is larger than the sum of its proper divisors (1).

189500000111 is an equidigital number, since it uses as much as digits as its factorization.

189500000111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 26.

The spelling of 189500000111 in words is "one hundred eighty-nine billion, five hundred million, one hundred eleven", and thus it is an aban number.