190996191 has 16 divisors (see below), whose sum is σ = 284094720. Its totient is φ = 126819000.

The previous prime is 190996181. The next prime is 190996199. The reversal of 190996191 is 191699091.

It is not a de Polignac number, because 190996191 - 2⁵ = 190996159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190996199) 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, 7315 + ... + 20868.

It is an arithmetic number, because the mean of its divisors is an integer number (17755920).

Almost surely, 2^190996191 is an apocalyptic number.

190996191 is a deficient number, since it is larger than the sum of its proper divisors (93098529).

190996191 is a wasteful number, since it uses less digits than its factorization.

190996191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28443 (or 28437 counting only the distinct ones).

The product of its (nonzero) digits is 39366, while the sum is 45.

The square root of 190996191 is about 13820.1371556146. The cubic root of 190996191 is about 575.8926937692.

The spelling of 190996191 in words is "one hundred ninety million, nine hundred ninety-six thousand, one hundred ninety-one".