191768463 has 12 divisors (see below), whose sum is σ = 291578040. Its totient is φ = 121116816.

The previous prime is 191768461. The next prime is 191768477. The reversal of 191768463 is 364867191.

It is a happy number.

191768463 is a `hidden beast` number, since 19 + 176 + 8 + 463 = 666.

It is not a de Polignac number, because 191768463 - 2¹ = 191768461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191768461) 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 11 ways as a sum of consecutive naturals, for example, 560556 + ... + 560897.

It is an arithmetic number, because the mean of its divisors is an integer number (24298170).

Almost surely, 2^191768463 is an apocalyptic number.

191768463 is a deficient number, since it is larger than the sum of its proper divisors (99809577).

191768463 is a wasteful number, since it uses less digits than its factorization.

191768463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121478 (or 1121475 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 191768463 is about 13848.0490683706. The cubic root of 191768463 is about 576.6678361357.

The spelling of 191768463 in words is "one hundred ninety-one million, seven hundred sixty-eight thousand, four hundred sixty-three".