198574867 has 2 divisors, whose sum is σ = 198574868. Its totient is φ = 198574866.

The previous prime is 198574853. The next prime is 198574877. The reversal of 198574867 is 768475891.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 198574867 - 2¹⁹ = 198050579 is a prime.

It is not a weakly prime, because it can be changed into another prime (198574837) 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, 99287433 + 99287434.

It is an arithmetic number, because the mean of its divisors is an integer number (99287434).

Almost surely, 2^198574867 is an apocalyptic number.

198574867 is a deficient number, since it is larger than the sum of its proper divisors (1).

198574867 is an equidigital number, since it uses as much as digits as its factorization.

198574867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3386880, while the sum is 55.

The square root of 198574867 is about 14091.6594835385. The cubic root of 198574867 is about 583.4111971890.

The spelling of 198574867 in words is "one hundred ninety-eight million, five hundred seventy-four thousand, eight hundred sixty-seven".