191839050089 has 16 divisors (see below), whose sum is σ = 196175468160. Its totient is φ = 187553128320.

The previous prime is 191839050077. The next prime is 191839050097. The reversal of 191839050089 is 980050938191.

It is a cyclic number.

It is not a de Polignac number, because 191839050089 - 2¹⁶ = 191838984553 is a prime.

It is a super-2 number, since 2×191839050089² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 191839050089.

It is not an unprimeable number, because it can be changed into a prime (191839050889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6550499 + ... + 6579719.

It is an arithmetic number, because the mean of its divisors is an integer number (12260966760).

Almost surely, 2^191839050089 is an apocalyptic number.

It is an amenable number.

191839050089 is a deficient number, since it is larger than the sum of its proper divisors (4336418071).

191839050089 is a wasteful number, since it uses less digits than its factorization.

191839050089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30080.

The product of its (nonzero) digits is 699840, while the sum is 53.

The spelling of 191839050089 in words is "one hundred ninety-one billion, eight hundred thirty-nine million, fifty thousand, eighty-nine".