198695305385 has 4 divisors (see below), whose sum is σ = 238434366468. Its totient is φ = 158956244304.

The previous prime is 198695305357. The next prime is 198695305409. The reversal of 198695305385 is 583503596891.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 91392545344 + 107302760041 = 302312^2 + 327571^2 .

It is a cyclic number.

It is not a de Polignac number, because 198695305385 - 2⁶ = 198695305321 is a prime.

It is a super-3 number, since 3×198695305385³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19869530534 + ... + 19869530543.

It is an arithmetic number, because the mean of its divisors is an integer number (59608591617).

Almost surely, 2^198695305385 is an apocalyptic number.

It is an amenable number.

198695305385 is a deficient number, since it is larger than the sum of its proper divisors (39739061083).

198695305385 is an equidigital number, since it uses as much as digits as its factorization.

198695305385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39739061082.

The product of its (nonzero) digits is 34992000, while the sum is 62.

The spelling of 198695305385 in words is "one hundred ninety-eight billion, six hundred ninety-five million, three hundred five thousand, three hundred eighty-five".