190891168 has 96 divisors (see below), whose sum is σ = 429795072. Its totient is φ = 82790400.

The previous prime is 190891159. The next prime is 190891171. The reversal of 190891168 is 861198091.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 679188 + ... + 679468.

It is an arithmetic number, because the mean of its divisors is an integer number (4477032).

Almost surely, 2^190891168 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 190891168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214897536).

190891168 is an abundant number, since it is smaller than the sum of its proper divisors (238903904).

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

190891168 is a wasteful number, since it uses less digits than its factorization.

190891168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398 (or 390 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 43.

The square root of 190891168 is about 13816.3369964691. The cubic root of 190891168 is about 575.7871191202.

The spelling of 190891168 in words is "one hundred ninety million, eight hundred ninety-one thousand, one hundred sixty-eight".