190968791 has 8 divisors (see below), whose sum is σ = 216483120. Its totient is φ = 167000832.

The previous prime is 190968761. The next prime is 190968809. The reversal of 190968791 is 197869091.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 190968791 - 2⁶ = 190968727 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 (190968721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 386330 + ... + 386823.

It is an arithmetic number, because the mean of its divisors is an integer number (27060390).

Almost surely, 2^190968791 is an apocalyptic number.

190968791 is a deficient number, since it is larger than the sum of its proper divisors (25514329).

190968791 is a wasteful number, since it uses less digits than its factorization.

190968791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773185.

The product of its (nonzero) digits is 244944, while the sum is 50.

The square root of 190968791 is about 13819.1458129654. The cubic root of 190968791 is about 575.8651535788.

The spelling of 190968791 in words is "one hundred ninety million, nine hundred sixty-eight thousand, seven hundred ninety-one".