195371882490 has 64 divisors (see below), whose sum is σ = 484247043072. Its totient is φ = 50394700800.

The previous prime is 195371882473. The next prime is 195371882533. The reversal of 195371882490 is 94288173591.

It is a self number, because there is not a number n which added to its sum of digits gives 195371882490.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1961124 + ... + 2058336.

It is an arithmetic number, because the mean of its divisors is an integer number (7566360048).

Almost surely, 2^195371882490 is an apocalyptic number.

195371882490 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 195371882490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242123521536).

195371882490 is an abundant number, since it is smaller than the sum of its proper divisors (288875160582).

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

195371882490 is a wasteful number, since it uses less digits than its factorization.

195371882490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99415.

The product of its (nonzero) digits is 4354560, while the sum is 57.

The spelling of 195371882490 in words is "one hundred ninety-five billion, three hundred seventy-one million, eight hundred eighty-two thousand, four hundred ninety".