195742386 has 128 divisors (see below), whose sum is σ = 534159360. Its totient is φ = 51860736.

The previous prime is 195742381. The next prime is 195742387. The reversal of 195742386 is 683247591.

It is not an unprimeable number, because it can be changed into a prime (195742381) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 533175 + ... + 533541.

It is an arithmetic number, because the mean of its divisors is an integer number (4173120).

Almost surely, 2^195742386 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 195742386, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267079680).

195742386 is an abundant number, since it is smaller than the sum of its proper divisors (338416974).

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

195742386 is a wasteful number, since it uses less digits than its factorization.

195742386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485 (or 479 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 195742386 is about 13990.7964748259. The cubic root of 195742386 is about 580.6239678089.

The spelling of 195742386 in words is "one hundred ninety-five million, seven hundred forty-two thousand, three hundred eighty-six".