191216016 has 30 divisors (see below), whose sum is σ = 535139670. Its totient is φ = 63738624.

The previous prime is 191215987. The next prime is 191216023. The reversal of 191216016 is 610612191.

191216016 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 106502400 + 84713616 = 10320^2 + 9204^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 663801 + ... + 664088.

It is an arithmetic number, because the mean of its divisors is an integer number (17837989).

Almost surely, 2^191216016 is an apocalyptic number.

191216016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

191216016 is an abundant number, since it is smaller than the sum of its proper divisors (343923654).

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

191216016 is a wasteful number, since it uses less digits than its factorization.

191216016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1327903 (or 1327894 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 191216016 is about 13828.0879372385. The cubic root of 191216016 is about 576.1135482164.

The spelling of 191216016 in words is "one hundred ninety-one million, two hundred sixteen thousand, sixteen".