197932209253 has 4 divisors (see below), whose sum is σ = 203281728460. Its totient is φ = 192582690048.

The previous prime is 197932209239. The next prime is 197932209257. The reversal of 197932209253 is 352902239791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 352902239791 = 20107 ⋅17551213.

It can be written as a sum of positive squares in 2 ways, for example, as 132916388929 + 65015820324 = 364577^2 + 254982^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197932209253 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 197932209253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197932209257) 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, 2674759548 + ... + 2674759621.

It is an arithmetic number, because the mean of its divisors is an integer number (50820432115).

Almost surely, 2^197932209253 is an apocalyptic number.

It is an amenable number.

197932209253 is a deficient number, since it is larger than the sum of its proper divisors (5349519207).

197932209253 is an equidigital number, since it uses as much as digits as its factorization.

197932209253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5349519206.

The product of its (nonzero) digits is 1837080, while the sum is 52.

The spelling of 197932209253 in words is "one hundred ninety-seven billion, nine hundred thirty-two million, two hundred nine thousand, two hundred fifty-three".