195961518 has 96 divisors (see below), whose sum is σ = 470486016. Its totient is φ = 60987168.

The previous prime is 195961501. The next prime is 195961523. The reversal of 195961518 is 815169591.

195961518 is a `hidden beast` number, since 1 + 9 + 596 + 1 + 51 + 8 = 666.

195961518 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 525180 + ... + 525552.

It is an arithmetic number, because the mean of its divisors is an integer number (4900896).

Almost surely, 2^195961518 is an apocalyptic number.

195961518 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 195961518, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235243008).

195961518 is an abundant number, since it is smaller than the sum of its proper divisors (274524498).

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

195961518 is a wasteful number, since it uses less digits than its factorization.

195961518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460 (or 448 counting only the distinct ones).

The product of its digits is 97200, while the sum is 45.

The square root of 195961518 is about 13998.6255753913. The cubic root of 195961518 is about 580.8405549340.

The spelling of 195961518 in words is "one hundred ninety-five million, nine hundred sixty-one thousand, five hundred eighteen".