195354389 has 2 divisors, whose sum is σ = 195354390. Its totient is φ = 195354388.

The previous prime is 195354373. The next prime is 195354403. The reversal of 195354389 is 983453591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120670225 + 74684164 = 10985^2 + 8642^2 .

It is a cyclic number.

It is not a de Polignac number, because 195354389 - 2⁴ = 195354373 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195354319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97677194 + 97677195.

It is an arithmetic number, because the mean of its divisors is an integer number (97677195).

Almost surely, 2^195354389 is an apocalyptic number.

It is an amenable number.

195354389 is a deficient number, since it is larger than the sum of its proper divisors (1).

195354389 is an equidigital number, since it uses as much as digits as its factorization.

195354389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 583200, while the sum is 47.

The square root of 195354389 is about 13976.9234454511. The cubic root of 195354389 is about 580.2400799597.

The spelling of 195354389 in words is "one hundred ninety-five million, three hundred fifty-four thousand, three hundred eighty-nine".