840188196 has 27 divisors (see below), whose sum is σ = 2124248763. Its totient is φ = 280004760.

The previous prime is 840188191. The next prime is 840188207. The reversal of 840188196 is 691881048.

The square root of 840188196 is 28986.

It is a perfect power (a square), and thus also a powerful number.

It is not an unprimeable number, because it can be changed into a prime (840188191) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 171501 + ... + 176331.

Almost surely, 2^840188196 is an apocalyptic number.

840188196 is the 28986-th square number.

It is an amenable number.

840188196 is an abundant number, since it is smaller than the sum of its proper divisors (1284060567).

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

840188196 is an equidigital number, since it uses as much as digits as its factorization.

840188196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9672 (or 4836 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 45.

The cubic root of 840188196 is about 943.6092551775.

The spelling of 840188196 in words is "eight hundred forty million, one hundred eighty-eight thousand, one hundred ninety-six".