191904853047 has 16 divisors (see below), whose sum is σ = 256675491072. Its totient is φ = 127536013440.

The previous prime is 191904853031. The next prime is 191904853051. The reversal of 191904853047 is 740358409191.

It is not a de Polignac number, because 191904853047 - 2⁴ = 191904853031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191904853027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1168303 + ... + 1322399.

It is an arithmetic number, because the mean of its divisors is an integer number (16042218192).

Almost surely, 2^191904853047 is an apocalyptic number.

191904853047 is a deficient number, since it is larger than the sum of its proper divisors (64770638025).

191904853047 is a wasteful number, since it uses less digits than its factorization.

191904853047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155398.

The product of its (nonzero) digits is 1088640, while the sum is 51.

The spelling of 191904853047 in words is "one hundred ninety-one billion, nine hundred four million, eight hundred fifty-three thousand, forty-seven".