195490945 has 16 divisors (see below), whose sum is σ = 252946512. Its totient is φ = 144184320.

The previous prime is 195490931. The next prime is 195490949. The reversal of 195490945 is 549094591.

It is a happy number.

195490945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 69355584 + 126135361 = 8328^2 + 11231^2 .

It is not a de Polignac number, because 195490945 - 2⁵ = 195490913 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 195490895 and 195490904.

It is not an unprimeable number, because it can be changed into a prime (195490949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76285 + ... + 78805.

It is an arithmetic number, because the mean of its divisors is an integer number (15809157).

Almost surely, 2^195490945 is an apocalyptic number.

It is an amenable number.

195490945 is a deficient number, since it is larger than the sum of its proper divisors (57455567).

195490945 is a wasteful number, since it uses less digits than its factorization.

195490945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3732.

The product of its (nonzero) digits is 291600, while the sum is 46.

The square root of 195490945 is about 13981.8076442211. The cubic root of 195490945 is about 580.3752476579.

The spelling of 195490945 in words is "one hundred ninety-five million, four hundred ninety thousand, nine hundred forty-five".