191349361 has 24 divisors (see below), whose sum is σ = 239345280. Its totient is φ = 152040672.

The previous prime is 191349349. The next prime is 191349401. The reversal of 191349361 is 163943191.

It is a de Polignac number, because none of the positive numbers 2^k-191349361 is a prime.

It is a super-2 number, since 2×191349361² = 73229155910216642, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 191349361.

It is not an unprimeable number, because it can be changed into a prime (191319361) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41571 + ... + 45943.

It is an arithmetic number, because the mean of its divisors is an integer number (9972720).

Almost surely, 2^191349361 is an apocalyptic number.

It is an amenable number.

191349361 is a deficient number, since it is larger than the sum of its proper divisors (47995919).

191349361 is a wasteful number, since it uses less digits than its factorization.

191349361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4453 (or 4446 counting only the distinct ones).

The product of its digits is 17496, while the sum is 37.

The square root of 191349361 is about 13832.9086240024. The cubic root of 191349361 is about 576.2474352068.

The spelling of 191349361 in words is "one hundred ninety-one million, three hundred forty-nine thousand, three hundred sixty-one".