197952653 has 4 divisors (see below), whose sum is σ = 199993500. Its totient is φ = 195911808.

The previous prime is 197952647. The next prime is 197952661. The reversal of 197952653 is 356259791.

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 67947049 + 130005604 = 8243^2 + 11402^2 .

It is a cyclic number.

It is not a de Polignac number, because 197952653 - 2¹⁰ = 197951629 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 197952598 and 197952607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197952613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1020278 + ... + 1020471.

It is an arithmetic number, because the mean of its divisors is an integer number (49998375).

Almost surely, 2^197952653 is an apocalyptic number.

It is an amenable number.

197952653 is a deficient number, since it is larger than the sum of its proper divisors (2040847).

197952653 is an equidigital number, since it uses as much as digits as its factorization.

197952653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2040846.

The product of its digits is 510300, while the sum is 47.

The square root of 197952653 is about 14069.5647764954. The cubic root of 197952653 is about 582.8012065600.

The spelling of 197952653 in words is "one hundred ninety-seven million, nine hundred fifty-two thousand, six hundred fifty-three".