195134608494 has 128 divisors (see below), whose sum is σ = 529547673600. Its totient is φ = 51991580160.

The previous prime is 195134608463. The next prime is 195134608523. The reversal of 195134608494 is 494806431591.

195134608494 is a `hidden beast` number, since 1 + 9 + 5 + 13 + 460 + 84 + 94 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 195134608494.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 561139 + ... + 839729.

It is an arithmetic number, because the mean of its divisors is an integer number (4137091200).

Almost surely, 2^195134608494 is an apocalyptic number.

195134608494 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 195134608494, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264773836800).

195134608494 is an abundant number, since it is smaller than the sum of its proper divisors (334413065106).

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

195134608494 is a wasteful number, since it uses less digits than its factorization.

195134608494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278735 (or 278729 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The spelling of 195134608494 in words is "one hundred ninety-five billion, one hundred thirty-four million, six hundred eight thousand, four hundred ninety-four".