190919099911 has 2 divisors, whose sum is σ = 190919099912. Its totient is φ = 190919099910.

The previous prime is 190919099857. The next prime is 190919099927. The reversal of 190919099911 is 119990919091.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (119990919091) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 190919099911 - 2¹⁹ = 190918575623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190919099311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95459549955 + 95459549956.

It is an arithmetic number, because the mean of its divisors is an integer number (95459549956).

Almost surely, 2^190919099911 is an apocalyptic number.

190919099911 is a deficient number, since it is larger than the sum of its proper divisors (1).

190919099911 is an equidigital number, since it uses as much as digits as its factorization.

190919099911 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 531441, while the sum is 58.

The spelling of 190919099911 in words is "one hundred ninety billion, nine hundred nineteen million, ninety-nine thousand, nine hundred eleven".