198263669545 has 8 divisors (see below), whose sum is σ = 237972264840. Its totient is φ = 158573694720.

The previous prime is 198263669543. The next prime is 198263669557. The reversal of 198263669545 is 545966362891.

198263669545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 38634654249 + 159629015296 = 196557^2 + 399536^2 .

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

It is not a de Polignac number, because 198263669545 - 2¹ = 198263669543 is a prime.

It is a super-2 number, since 2×198263669545² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (198263669543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4631680 + ... + 4674289.

It is an arithmetic number, because the mean of its divisors is an integer number (29746533105).

Almost surely, 2^198263669545 is an apocalyptic number.

It is an amenable number.

198263669545 is a deficient number, since it is larger than the sum of its proper divisors (39708595295).

198263669545 is an equidigital number, since it uses as much as digits as its factorization.

198263669545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9310235.

The product of its digits is 83980800, while the sum is 64.

The spelling of 198263669545 in words is "one hundred ninety-eight billion, two hundred sixty-three million, six hundred sixty-nine thousand, five hundred forty-five".