190910900191 has 16 divisors (see below), whose sum is σ = 208607374080. Its totient is φ = 173271449920.

The previous prime is 190910900149. The next prime is 190910900251. The reversal of 190910900191 is 191009019091.

It is a cyclic number.

It is not a de Polignac number, because 190910900191 - 2¹⁵ = 190910867423 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 (190910900891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36202731 + ... + 36208003.

It is an arithmetic number, because the mean of its divisors is an integer number (13037960880).

Almost surely, 2^190910900191 is an apocalyptic number.

190910900191 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

190910900191 is a deficient number, since it is larger than the sum of its proper divisors (17696473889).

190910900191 is a wasteful number, since it uses less digits than its factorization.

190910900191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10046.

The product of its (nonzero) digits is 6561, while the sum is 40.

The spelling of 190910900191 in words is "one hundred ninety billion, nine hundred ten million, nine hundred thousand, one hundred ninety-one".