198936769 has 2 divisors, whose sum is σ = 198936770. Its totient is φ = 198936768.

The previous prime is 198936763. The next prime is 198936809. The reversal of 198936769 is 967639891.

198936769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 186595600 + 12341169 = 13660^2 + 3513^2 .

It is an emirp because it is prime and its reverse (967639891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 198936769 - 2¹⁵ = 198904001 is a prime.

It is a super-3 number, since 3×198936769³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (198936763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99468384 + 99468385.

It is an arithmetic number, because the mean of its divisors is an integer number (99468385).

Almost surely, 2^198936769 is an apocalyptic number.

It is an amenable number.

198936769 is a deficient number, since it is larger than the sum of its proper divisors (1).

198936769 is an equidigital number, since it uses as much as digits as its factorization.

198936769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4408992, while the sum is 58.

The square root of 198936769 is about 14104.4946382350. The cubic root of 198936769 is about 583.7654037175.

It can be divided in two parts, 19893 and 6769, that added together give a palindrome (26662).

The spelling of 198936769 in words is "one hundred ninety-eight million, nine hundred thirty-six thousand, seven hundred sixty-nine".