191361568 has 24 divisors (see below), whose sum is σ = 379717632. Its totient is φ = 94925376.

The previous prime is 191361551. The next prime is 191361589. The reversal of 191361568 is 865163191.

191361568 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 191361568.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19480 + ... + 27607.

It is an arithmetic number, because the mean of its divisors is an integer number (15821568).

Almost surely, 2^191361568 is an apocalyptic number.

It is an amenable number.

191361568 is a deficient number, since it is larger than the sum of its proper divisors (188356064).

191361568 is a wasteful number, since it uses less digits than its factorization.

191361568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47224 (or 47216 counting only the distinct ones).

The product of its digits is 38880, while the sum is 40.

The square root of 191361568 is about 13833.3498473797. The cubic root of 191361568 is about 576.2596887149.

The spelling of 191361568 in words is "one hundred ninety-one million, three hundred sixty-one thousand, five hundred sixty-eight".