195520449 has 4 divisors (see below), whose sum is σ = 260693936. Its totient is φ = 130346964.

The previous prime is 195520411. The next prime is 195520453. The reversal of 195520449 is 944025591.

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.

It is not a de Polignac number, because 195520449 - 2¹⁵ = 195487681 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (195520459) 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, 32586739 + ... + 32586744.

It is an arithmetic number, because the mean of its divisors is an integer number (65173484).

Almost surely, 2^195520449 is an apocalyptic number.

It is an amenable number.

195520449 is a deficient number, since it is larger than the sum of its proper divisors (65173487).

195520449 is an equidigital number, since it uses as much as digits as its factorization.

195520449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65173486.

The product of its (nonzero) digits is 64800, while the sum is 39.

The square root of 195520449 is about 13982.8626897356. The cubic root of 195520449 is about 580.4044434346.

It can be divided in two parts, 1955204 and 49, that added together give a triangular number (1955253 = T₁₉₇₇).

The spelling of 195520449 in words is "one hundred ninety-five million, five hundred twenty thousand, four hundred forty-nine".