195864481 has 4 divisors (see below), whose sum is σ = 204380352. Its totient is φ = 187348612.

The previous prime is 195864469. The next prime is 195864499. The reversal of 195864481 is 184468591.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 184468591 = 73 ⋅2526967.

It is a cyclic number.

It is not a de Polignac number, because 195864481 - 2¹⁹ = 195340193 is a prime.

It is a super-2 number, since 2×195864481² = 76725789834798722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195864401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4257901 + ... + 4257946.

It is an arithmetic number, because the mean of its divisors is an integer number (51095088).

Almost surely, 2^195864481 is an apocalyptic number.

It is an amenable number.

195864481 is a deficient number, since it is larger than the sum of its proper divisors (8515871).

195864481 is an equidigital number, since it uses as much as digits as its factorization.

195864481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8515870.

The product of its digits is 276480, while the sum is 46.

The square root of 195864481 is about 13995.1591988087. The cubic root of 195864481 is about 580.7446647963.

The spelling of 195864481 in words is "one hundred ninety-five million, eight hundred sixty-four thousand, four hundred eighty-one".