195320970 has 144 divisors (see below), whose sum is σ = 570384360. Its totient is φ = 47869056.

The previous prime is 195320959. The next prime is 195320989. The reversal of 195320970 is 79023591.

It can be written as a sum of positive squares in 4 ways, for example, as 165868641 + 29452329 = 12879^2 + 5427^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 852816 + ... + 853044.

Almost surely, 2^195320970 is an apocalyptic number.

195320970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 195320970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285192180).

195320970 is an abundant number, since it is smaller than the sum of its proper divisors (375063390).

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

195320970 is an equidigital number, since it uses as much as digits as its factorization.

195320970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 195320970 is about 13975.7278880207. The cubic root of 195320970 is about 580.2069911219.

The spelling of 195320970 in words is "one hundred ninety-five million, three hundred twenty thousand, nine hundred seventy".