195361889730 has 128 divisors (see below), whose sum is σ = 553867407360. Its totient is φ = 43177501440.

The previous prime is 195361889693. The next prime is 195361889759. The reversal of 195361889730 is 37988163591.

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 63 ways as a sum of consecutive naturals, for example, 626547 + ... + 885033.

It is an arithmetic number, because the mean of its divisors is an integer number (4327089120).

Almost surely, 2^195361889730 is an apocalyptic number.

195361889730 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 195361889730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276933703680).

195361889730 is an abundant number, since it is smaller than the sum of its proper divisors (358505517630).

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

195361889730 is a wasteful number, since it uses less digits than its factorization.

195361889730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258624.

The product of its (nonzero) digits is 9797760, while the sum is 60.

The spelling of 195361889730 in words is "one hundred ninety-five billion, three hundred sixty-one million, eight hundred eighty-nine thousand, seven hundred thirty".