191113390 has 32 divisors (see below), whose sum is σ = 376760160. Its totient is φ = 69366144.

The previous prime is 191113379. The next prime is 191113441. The reversal of 191113390 is 93311191.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4789 + ... + 20128.

It is an arithmetic number, because the mean of its divisors is an integer number (11773755).

Almost surely, 2^191113390 is an apocalyptic number.

191113390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

191113390 is a deficient number, since it is larger than the sum of its proper divisors (185646770).

191113390 is a wasteful number, since it uses less digits than its factorization.

191113390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24996.

The product of its (nonzero) digits is 729, while the sum is 28.

The square root of 191113390 is about 13824.3766586418. The cubic root of 191113390 is about 576.0104626925.

The spelling of 191113390 in words is "one hundred ninety-one million, one hundred thirteen thousand, three hundred ninety".