195540073 has 8 divisors (see below), whose sum is σ = 196968200. Its totient is φ = 194116608.

The previous prime is 195540067. The next prime is 195540097. The reversal of 195540073 is 370045591.

It can be written as a sum of positive squares in 4 ways, for example, as 8479744 + 187060329 = 2912^2 + 13677^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-195540073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195540173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136123 + ... + 137551.

It is an arithmetic number, because the mean of its divisors is an integer number (24621025).

Almost surely, 2^195540073 is an apocalyptic number.

It is an amenable number.

195540073 is a deficient number, since it is larger than the sum of its proper divisors (1428127).

195540073 is a wasteful number, since it uses less digits than its factorization.

195540073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2331.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 195540073 is about 13983.5643882381. The cubic root of 195540073 is about 580.4238607996.

The spelling of 195540073 in words is "one hundred ninety-five million, five hundred forty thousand, seventy-three".