195038693 has 4 divisors (see below), whose sum is σ = 195338028. Its totient is φ = 194739360.

The previous prime is 195038687. The next prime is 195038707. The reversal of 195038693 is 396830591.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 396830591 = 521 ⋅761671.

It can be written as a sum of positive squares in 2 ways, for example, as 59013124 + 136025569 = 7682^2 + 11663^2 .

It is a cyclic number.

It is not a de Polignac number, because 195038693 - 2¹⁰ = 195037669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195038663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148688 + ... + 149993.

It is an arithmetic number, because the mean of its divisors is an integer number (48834507).

Almost surely, 2^195038693 is an apocalyptic number.

It is an amenable number.

195038693 is a deficient number, since it is larger than the sum of its proper divisors (299335).

195038693 is an equidigital number, since it uses as much as digits as its factorization.

195038693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299334.

The product of its (nonzero) digits is 174960, while the sum is 44.

The square root of 195038693 is about 13965.6254066905. The cubic root of 195038693 is about 579.9273521771.

The spelling of 195038693 in words is "one hundred ninety-five million, thirty-eight thousand, six hundred ninety-three".