198760451 has 2 divisors, whose sum is σ = 198760452. Its totient is φ = 198760450.

The previous prime is 198760421. The next prime is 198760477. The reversal of 198760451 is 154067891.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198760451 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 198760399 and 198760408.

It is not a weakly prime, because it can be changed into another prime (198760421) 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 as a sum of consecutive naturals, namely, 99380225 + 99380226.

It is an arithmetic number, because the mean of its divisors is an integer number (99380226).

Almost surely, 2^198760451 is an apocalyptic number.

198760451 is a deficient number, since it is larger than the sum of its proper divisors (1).

198760451 is an equidigital number, since it uses as much as digits as its factorization.

198760451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 198760451 is about 14098.2428337719. The cubic root of 198760451 is about 583.5928886474.

The spelling of 198760451 in words is "one hundred ninety-eight million, seven hundred sixty thousand, four hundred fifty-one".