190768349 has 4 divisors (see below), whose sum is σ = 190797180. Its totient is φ = 190739520.

The previous prime is 190768313. The next prime is 190768387. The reversal of 190768349 is 943867091.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 943867091 = 61 ⋅15473231.

It can be written as a sum of positive squares in 2 ways, for example, as 134142724 + 56625625 = 11582^2 + 7525^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-190768349 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190768309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1019 + ... + 19559.

It is an arithmetic number, because the mean of its divisors is an integer number (47699295).

Almost surely, 2^190768349 is an apocalyptic number.

It is an amenable number.

190768349 is a deficient number, since it is larger than the sum of its proper divisors (28831).

190768349 is a wasteful number, since it uses less digits than its factorization.

190768349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28830.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 190768349 is about 13811.8915793602. The cubic root of 190768349 is about 575.6636058624.

The spelling of 190768349 in words is "one hundred ninety million, seven hundred sixty-eight thousand, three hundred forty-nine".