191063216 has 20 divisors (see below), whose sum is σ = 370674192. Its totient is φ = 95405376.

The previous prime is 191063209. The next prime is 191063263. The reversal of 191063216 is 612360191.

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 3 ways as a sum of consecutive naturals, for example, 5261 + ... + 20243.

Almost surely, 2^191063216 is an apocalyptic number.

191063216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

191063216 is a deficient number, since it is larger than the sum of its proper divisors (179610976).

191063216 is a wasteful number, since it uses less digits than its factorization.

191063216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15788 (or 15782 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 191063216 is about 13822.5618464885. The cubic root of 191063216 is about 575.9600505987.

It can be divided in two parts, 19106 and 3216, that added together give a palindrome (22322).

The spelling of 191063216 in words is "one hundred ninety-one million, sixty-three thousand, two hundred sixteen".