195739445 has 16 divisors (see below), whose sum is σ = 271315008. Its totient is φ = 133981440.

The previous prime is 195739433. The next prime is 195739447. The reversal of 195739445 is 544937591.

It is not a de Polignac number, because 195739445 - 2⁴ = 195739429 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 195739445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195739447) 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, 103739 + ... + 105608.

It is an arithmetic number, because the mean of its divisors is an integer number (16957188).

Almost surely, 2^195739445 is an apocalyptic number.

It is an amenable number.

195739445 is a deficient number, since it is larger than the sum of its proper divisors (75575563).

195739445 is a wasteful number, since it uses less digits than its factorization.

195739445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209380.

The product of its digits is 680400, while the sum is 47.

The square root of 195739445 is about 13990.6913696214. The cubic root of 195739445 is about 580.6210598650.

The spelling of 195739445 in words is "one hundred ninety-five million, seven hundred thirty-nine thousand, four hundred forty-five".