191315832 has 16 divisors (see below), whose sum is σ = 478289640. Its totient is φ = 63771936.

The previous prime is 191315821. The next prime is 191315837. The reversal of 191315832 is 238513191.

It is a junction number, because it is equal to n+sod(n) for n = 191315793 and 191315802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191315837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3985723 + ... + 3985770.

Almost surely, 2^191315832 is an apocalyptic number.

191315832 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

191315832 is an abundant number, since it is smaller than the sum of its proper divisors (286973808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

191315832 is a wasteful number, since it uses less digits than its factorization.

191315832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7971502 (or 7971498 counting only the distinct ones).

The product of its digits is 6480, while the sum is 33.

The square root of 191315832 is about 13831.6966421332. The cubic root of 191315832 is about 576.2137757809.

The spelling of 191315832 in words is "one hundred ninety-one million, three hundred fifteen thousand, eight hundred thirty-two".