198964653 has 4 divisors (see below), whose sum is σ = 265286208. Its totient is φ = 132643100.

The previous prime is 198964643. The next prime is 198964663. The reversal of 198964653 is 356469891.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (198964643) and next prime (198964663).

It is a cyclic number.

It is not a de Polignac number, because 198964653 - 2¹⁰ = 198963629 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 198964596 and 198964605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198964613) 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, 33160773 + ... + 33160778.

It is an arithmetic number, because the mean of its divisors is an integer number (66321552).

Almost surely, 2^198964653 is an apocalyptic number.

It is an amenable number.

198964653 is a deficient number, since it is larger than the sum of its proper divisors (66321555).

198964653 is an equidigital number, since it uses as much as digits as its factorization.

198964653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66321554.

The product of its digits is 1399680, while the sum is 51.

The square root of 198964653 is about 14105.4830828299. The cubic root of 198964653 is about 583.7926769631.

The spelling of 198964653 in words is "one hundred ninety-eight million, nine hundred sixty-four thousand, six hundred fifty-three".