191345461 has 8 divisors (see below), whose sum is σ = 195834240. Its totient is φ = 186908832.

The previous prime is 191345459. The next prime is 191345491. The reversal of 191345461 is 164543191.

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 191345461 - 2¹ = 191345459 is a prime.

It is a super-2 number, since 2×191345461² = 73226170890605042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191345431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5565 + ... + 20338.

It is an arithmetic number, because the mean of its divisors is an integer number (24479280).

Almost surely, 2^191345461 is an apocalyptic number.

It is an amenable number.

191345461 is a deficient number, since it is larger than the sum of its proper divisors (4488779).

191345461 is an equidigital number, since it uses as much as digits as its factorization.

191345461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26075.

The product of its digits is 12960, while the sum is 34.

The square root of 191345461 is about 13832.7676551007. The cubic root of 191345461 is about 576.2435202381.

It can be divided in two parts, 1913 and 45461, that added together give a palindrome (47374).

The spelling of 191345461 in words is "one hundred ninety-one million, three hundred forty-five thousand, four hundred sixty-one".