198052403365 has 4 divisors (see below), whose sum is σ = 237662884044. Its totient is φ = 158441922688.

The previous prime is 198052403363. The next prime is 198052403369. The reversal of 198052403365 is 563304250891.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 563304250891 = 6959 ⋅80946149.

It can be written as a sum of positive squares in 2 ways, for example, as 109311568129 + 88740835236 = 330623^2 + 297894^2 .

It is a cyclic number.

It is not a de Polignac number, because 198052403365 - 2¹ = 198052403363 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 (198052403363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19805240332 + ... + 19805240341.

It is an arithmetic number, because the mean of its divisors is an integer number (59415721011).

Almost surely, 2^198052403365 is an apocalyptic number.

It is an amenable number.

198052403365 is a deficient number, since it is larger than the sum of its proper divisors (39610480679).

198052403365 is an equidigital number, since it uses as much as digits as its factorization.

198052403365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39610480678.

The product of its (nonzero) digits is 777600, while the sum is 46.

The spelling of 198052403365 in words is "one hundred ninety-eight billion, fifty-two million, four hundred three thousand, three hundred sixty-five".