195805365001 has 3 divisors (see below), whose sum is σ = 195805807501. Its totient is φ = 195804922502.

The previous prime is 195805364927. The next prime is 195805365047. The reversal of 195805365001 is 100563508591.

The square root of 195805365001 is 442499.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 195805365001 - 2²³ = 195796976393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195805365061) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 221250 + ... + 663748.

Almost surely, 2^195805365001 is an apocalyptic number.

195805365001 is the 442499-th square number.

195805365001 is the 221250-th centered octagonal number.

It is an amenable number.

195805365001 is a deficient number, since it is larger than the sum of its proper divisors (442500).

195805365001 is an frugal number, since it uses more digits than its factorization.

195805365001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884998 (or 442499 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 43.

The spelling of 195805365001 in words is "one hundred ninety-five billion, eight hundred five million, three hundred sixty-five thousand, one".