191374539904 has 32 divisors (see below), whose sum is σ = 382292899200. Its totient is φ = 95426518272.

The previous prime is 191374539883. The next prime is 191374539913. The reversal of 191374539904 is 409935473191.

191374539904 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1989964 + ... + 2083915.

It is an arithmetic number, because the mean of its divisors is an integer number (11946653100).

Almost surely, 2^191374539904 is an apocalyptic number.

It is an amenable number.

191374539904 is a deficient number, since it is larger than the sum of its proper divisors (190918359296).

191374539904 is an equidigital number, since it uses as much as digits as its factorization.

191374539904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4074260 (or 4074248 counting only the distinct ones).

The product of its (nonzero) digits is 3674160, while the sum is 55.

The spelling of 191374539904 in words is "one hundred ninety-one billion, three hundred seventy-four million, five hundred thirty-nine thousand, nine hundred four".