198904513 has 2 divisors, whose sum is σ = 198904514. Its totient is φ = 198904512.

The previous prime is 198904481. The next prime is 198904549. The reversal of 198904513 is 315409891.

198904513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140351409 + 58553104 = 11847^2 + 7652^2 .

It is a cyclic number.

It is not a de Polignac number, because 198904513 - 2⁵ = 198904481 is a prime.

It is not a weakly prime, because it can be changed into another prime (198904553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99452256 + 99452257.

It is an arithmetic number, because the mean of its divisors is an integer number (99452257).

Almost surely, 2^198904513 is an apocalyptic number.

It is an amenable number.

198904513 is a deficient number, since it is larger than the sum of its proper divisors (1).

198904513 is an equidigital number, since it uses as much as digits as its factorization.

198904513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 198904513 is about 14103.3511265940. The cubic root of 198904513 is about 583.7338510543.

The spelling of 198904513 in words is "one hundred ninety-eight million, nine hundred four thousand, five hundred thirteen".