198516893 has 4 divisors (see below), whose sum is σ = 198683388. Its totient is φ = 198350400.

The previous prime is 198516847. The next prime is 198516917. The reversal of 198516893 is 398615891.

It is a happy number.

198516893 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 63329764 + 135187129 = 7958^2 + 11627^2 .

It is a cyclic number.

It is not a de Polignac number, because 198516893 - 2¹⁰ = 198515869 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 (198516833) 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, 81446 + ... + 83847.

It is an arithmetic number, because the mean of its divisors is an integer number (49670847).

Almost surely, 2^198516893 is an apocalyptic number.

It is an amenable number.

198516893 is a deficient number, since it is larger than the sum of its proper divisors (166495).

198516893 is a wasteful number, since it uses less digits than its factorization.

198516893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166494.

The product of its digits is 466560, while the sum is 50.

The square root of 198516893 is about 14089.6023009878. The cubic root of 198516893 is about 583.3544159637.

The spelling of 198516893 in words is "one hundred ninety-eight million, five hundred sixteen thousand, eight hundred ninety-three".