195303945 has 32 divisors (see below), whose sum is σ = 337841280. Its totient is φ = 96007680.

The previous prime is 195303929. The next prime is 195303949. The reversal of 195303945 is 549303591.

It is not a de Polignac number, because 195303945 - 2⁴ = 195303929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (195303949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1285 + ... + 19805.

It is an arithmetic number, because the mean of its divisors is an integer number (10557540).

Almost surely, 2^195303945 is an apocalyptic number.

195303945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

195303945 is a deficient number, since it is larger than the sum of its proper divisors (142537335).

195303945 is a wasteful number, since it uses less digits than its factorization.

195303945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18585.

The product of its (nonzero) digits is 72900, while the sum is 39.

The square root of 195303945 is about 13975.1187830372. The cubic root of 195303945 is about 580.1901328688.

The spelling of 195303945 in words is "one hundred ninety-five million, three hundred three thousand, nine hundred forty-five".