189199209011 has 2 divisors, whose sum is σ = 189199209012. Its totient is φ = 189199209010.

The previous prime is 189199208987. The next prime is 189199209091. The reversal of 189199209011 is 110902991981.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189199209011 is a prime.

It is not a weakly prime, because it can be changed into another prime (189199209091) 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, 94599604505 + 94599604506.

It is an arithmetic number, because the mean of its divisors is an integer number (94599604506).

Almost surely, 2^189199209011 is an apocalyptic number.

189199209011 is a deficient number, since it is larger than the sum of its proper divisors (1).

189199209011 is an equidigital number, since it uses as much as digits as its factorization.

189199209011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 104976, while the sum is 50.

The spelling of 189199209011 in words is "one hundred eighty-nine billion, one hundred ninety-nine million, two hundred nine thousand, eleven".