191600064 has 126 divisors (see below), whose sum is σ = 583899264. Its totient is φ = 60057600.

The previous prime is 191600063. The next prime is 191600083. The reversal of 191600064 is 460006191.

191600064 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191600063) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 165889 + ... + 167039.

Almost surely, 2^191600064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 191600064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291949632).

191600064 is an abundant number, since it is smaller than the sum of its proper divisors (392299200).

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

191600064 is a wasteful number, since it uses less digits than its factorization.

191600064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1203 (or 1173 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 191600064 is about 13841.9674902089. The cubic root of 191600064 is about 576.4989888973.

The spelling of 191600064 in words is "one hundred ninety-one million, six hundred thousand, sixty-four".