195986340 has 216 divisors, whose sum is σ = 676638144. Its totient is φ = 45532800.

The previous prime is 195986333. The next prime is 195986347. The reversal of 195986340 is 43689591.

It is a happy number.

195986340 is a `hidden beast` number, since 1 + 9 + 5 + 9 + 8 + 634 + 0 = 666.

195986340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (195986333) and next prime (195986347).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (195986347) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1902729 + ... + 1902831.

It is an arithmetic number, because the mean of its divisors is an integer number (3132584).

Almost surely, 2^195986340 is an apocalyptic number.

195986340 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 195986340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (338319072).

195986340 is an abundant number, since it is smaller than the sum of its proper divisors (480651804).

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

195986340 is a wasteful number, since it uses less digits than its factorization.

195986340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 195986340 is about 13999.5121343567. The cubic root of 195986340 is about 580.8650784828.

The spelling of 195986340 in words is "one hundred ninety-five million, nine hundred eighty-six thousand, three hundred forty".