191620116 has 36 divisors (see below), whose sum is σ = 485212000. Its totient is φ = 63762768.

The previous prime is 191620103. The next prime is 191620123. The reversal of 191620116 is 611026191.

191620116 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 191620116.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17985 + ... + 26583.

Almost surely, 2^191620116 is an apocalyptic number.

It is an amenable number.

191620116 is an abundant number, since it is smaller than the sum of its proper divisors (293591884).

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

191620116 is a wasteful number, since it uses less digits than its factorization.

191620116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9228 (or 9223 counting only the distinct ones).

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

The square root of 191620116 is about 13842.6917902552. The cubic root of 191620116 is about 576.5190994586.

The spelling of 191620116 in words is "one hundred ninety-one million, six hundred twenty thousand, one hundred sixteen".