198442653 has 16 divisors (see below), whose sum is σ = 270271296. Its totient is φ = 129467520.

The previous prime is 198442633. The next prime is 198442661. The reversal of 198442653 is 356244891.

It is not a de Polignac number, because 198442653 - 2¹⁴ = 198426269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198442613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71298 + ... + 74028.

It is an arithmetic number, because the mean of its divisors is an integer number (16891956).

Almost surely, 2^198442653 is an apocalyptic number.

It is an amenable number.

198442653 is a deficient number, since it is larger than the sum of its proper divisors (71828643).

198442653 is a wasteful number, since it uses less digits than its factorization.

198442653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3244.

The product of its digits is 207360, while the sum is 42.

The square root of 198442653 is about 14086.9674877171. The cubic root of 198442653 is about 583.2816872553.

The spelling of 198442653 in words is "one hundred ninety-eight million, four hundred forty-two thousand, six hundred fifty-three".