198956453 has 2 divisors, whose sum is σ = 198956454. Its totient is φ = 198956452.

The previous prime is 198956447. The next prime is 198956473. The reversal of 198956453 is 354659891.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 197739844 + 1216609 = 14062^2 + 1103^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198956453 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198956473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99478226 + 99478227.

It is an arithmetic number, because the mean of its divisors is an integer number (99478227).

Almost surely, 2^198956453 is an apocalyptic number.

It is an amenable number.

198956453 is a deficient number, since it is larger than the sum of its proper divisors (1).

198956453 is an equidigital number, since it uses as much as digits as its factorization.

198956453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1166400, while the sum is 50.

The square root of 198956453 is about 14105.1924127252. The cubic root of 198956453 is about 583.7846568355.

The spelling of 198956453 in words is "one hundred ninety-eight million, nine hundred fifty-six thousand, four hundred fifty-three".