195781000361 has 24 divisors (see below), whose sum is σ = 219937372704. Its totient is φ = 173621796480.

The previous prime is 195781000313. The next prime is 195781000381. The reversal of 195781000361 is 163000187591.

It is a de Polignac number, because none of the positive numbers 2^k-195781000361 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (195781000381) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 440066 + ... + 764996.

It is an arithmetic number, because the mean of its divisors is an integer number (9164057196).

Almost surely, 2^195781000361 is an apocalyptic number.

It is an amenable number.

195781000361 is a deficient number, since it is larger than the sum of its proper divisors (24156372343).

195781000361 is a wasteful number, since it uses less digits than its factorization.

195781000361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325061 (or 325038 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 41.

The spelling of 195781000361 in words is "one hundred ninety-five billion, seven hundred eighty-one million, three hundred sixty-one", and thus it is an aban number.