195905146 has 4 divisors (see below), whose sum is σ = 293857722. Its totient is φ = 97952572.

The previous prime is 195905141. The next prime is 195905147. The reversal of 195905146 is 641509591.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 185913225 + 9991921 = 13635^2 + 3161^2 .

It is a junction number, because it is equal to n+sod(n) for n = 195905099 and 195905108.

It is not an unprimeable number, because it can be changed into a prime (195905141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48976285 + ... + 48976288.

Almost surely, 2^195905146 is an apocalyptic number.

195905146 is a deficient number, since it is larger than the sum of its proper divisors (97952576).

195905146 is an equidigital number, since it uses as much as digits as its factorization.

195905146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97952575.

The product of its (nonzero) digits is 48600, while the sum is 40.

The square root of 195905146 is about 13996.6119471821. The cubic root of 195905146 is about 580.7848530385.

The spelling of 195905146 in words is "one hundred ninety-five million, nine hundred five thousand, one hundred forty-six".