190591968 has 144 divisors (see below), whose sum is σ = 601219584. Its totient is φ = 52657920.

The previous prime is 190591967. The next prime is 190591993. The reversal of 190591968 is 869195091.

190591968 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×190591968² = 72650596532226048, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190591963) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 145171 + ... + 146477.

It is an arithmetic number, because the mean of its divisors is an integer number (4175136).

Almost surely, 2^190591968 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 190591968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (300609792).

190591968 is an abundant number, since it is smaller than the sum of its proper divisors (410627616).

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

190591968 is a wasteful number, since it uses less digits than its factorization.

190591968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1365 (or 1350 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 48.

The square root of 190591968 is about 13805.5049889528. The cubic root of 190591968 is about 575.4861350679.

The spelling of 190591968 in words is "one hundred ninety million, five hundred ninety-one thousand, nine hundred sixty-eight".