191748968 has 8 divisors (see below), whose sum is σ = 359529330. Its totient is φ = 95874480.

The previous prime is 191748961. The next prime is 191748979. The reversal of 191748968 is 869847191.

It can be written as a sum of positive squares in only one way, i.e., 177475684 + 14273284 = 13322^2 + 3778^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (191748961) 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 as a sum of consecutive naturals, namely, 11984303 + ... + 11984318.

Almost surely, 2^191748968 is an apocalyptic number.

It is an amenable number.

191748968 is a deficient number, since it is larger than the sum of its proper divisors (167780362).

191748968 is a wasteful number, since it uses less digits than its factorization.

191748968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23968627 (or 23968623 counting only the distinct ones).

The product of its digits is 870912, while the sum is 53.

The square root of 191748968 is about 13847.3451607158. The cubic root of 191748968 is about 576.6482943052.

The spelling of 191748968 in words is "one hundred ninety-one million, seven hundred forty-eight thousand, nine hundred sixty-eight".