195448538 has 4 divisors (see below), whose sum is σ = 293172810. Its totient is φ = 97724268.

The previous prime is 195448531. The next prime is 195448543. The reversal of 195448538 is 835844591.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 835844591 = 109 ⋅7668299.

It can be written as a sum of positive squares in only one way, i.e., 172475689 + 22972849 = 13133^2 + 4793^2 .

It is a junction number, because it is equal to n+sod(n) for n = 195448492 and 195448501.

It is not an unprimeable number, because it can be changed into a prime (195448531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48862133 + ... + 48862136.

Almost surely, 2^195448538 is an apocalyptic number.

195448538 is a deficient number, since it is larger than the sum of its proper divisors (97724272).

195448538 is an equidigital number, since it uses as much as digits as its factorization.

195448538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97724271.

The product of its digits is 691200, while the sum is 47.

The square root of 195448538 is about 13980.2910556254. The cubic root of 195448538 is about 580.3332785307. Note that the first 3 decimals are identical.

It can be divided in two parts, 19544 and 8538, that added together give a palindrome (28082).

The spelling of 195448538 in words is "one hundred ninety-five million, four hundred forty-eight thousand, five hundred thirty-eight".