191798815846 has 48 divisors (see below), whose sum is σ = 321614866224. Its totient is φ = 85046832000.

The previous prime is 191798815837. The next prime is 191798815853. The reversal of 191798815846 is 648518897191.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 38196816 + ... + 38201836.

It is an arithmetic number, because the mean of its divisors is an integer number (6700309713).

Almost surely, 2^191798815846 is an apocalyptic number.

191798815846 is a deficient number, since it is larger than the sum of its proper divisors (129816050378).

191798815846 is a wasteful number, since it uses less digits than its factorization.

191798815846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5449 (or 5268 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 67.

The spelling of 191798815846 in words is "one hundred ninety-one billion, seven hundred ninety-eight million, eight hundred fifteen thousand, eight hundred forty-six".