190991360 has 132 divisors (see below), whose sum is σ = 530877168. Its totient is φ = 64585728.

The previous prime is 190991327. The next prime is 190991369. The reversal of 190991360 is 63199091.

It is not an unprimeable number, because it can be changed into a prime (190991369) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2616284 + ... + 2616356.

Almost surely, 2^190991360 is an apocalyptic number.

190991360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 190991360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265438584).

190991360 is an abundant number, since it is smaller than the sum of its proper divisors (339885808).

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

190991360 is an frugal number, since it uses more digits than its factorization.

190991360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178 (or 87 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 38.

The square root of 190991360 is about 13819.9623733207. The cubic root of 190991360 is about 575.8878382430.

The spelling of 190991360 in words is "one hundred ninety million, nine hundred ninety-one thousand, three hundred sixty".