195213146 has 4 divisors (see below), whose sum is σ = 292819722. Its totient is φ = 97606572.

The previous prime is 195213127. The next prime is 195213149. The reversal of 195213146 is 641312591.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 641312591 = 5171 ⋅124021.

It can be written as a sum of positive squares in only one way, i.e., 110481121 + 84732025 = 10511^2 + 9205^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (195213149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48803285 + ... + 48803288.

Almost surely, 2^195213146 is an apocalyptic number.

195213146 is a deficient number, since it is larger than the sum of its proper divisors (97606576).

195213146 is an equidigital number, since it uses as much as digits as its factorization.

195213146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97606575.

The product of its digits is 6480, while the sum is 32.

The square root of 195213146 is about 13971.8698104441. The cubic root of 195213146 is about 580.1002066261.

The spelling of 195213146 in words is "one hundred ninety-five million, two hundred thirteen thousand, one hundred forty-six".