198858001 has 2 divisors, whose sum is σ = 198858002. Its totient is φ = 198858000.

The previous prime is 198857983. The next prime is 198858019. The reversal of 198858001 is 100858891.

198858001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (198857983) and next prime (198858019).

It can be written as a sum of positive squares in only one way, i.e., 175827600 + 23030401 = 13260^2 + 4799^2 .

It is a cyclic number.

It is not a de Polignac number, because 198858001 - 2⁷ = 198857873 is a prime.

It is not a weakly prime, because it can be changed into another prime (198858031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99429000 + 99429001.

It is an arithmetic number, because the mean of its divisors is an integer number (99429001).

Almost surely, 2^198858001 is an apocalyptic number.

It is an amenable number.

198858001 is a deficient number, since it is larger than the sum of its proper divisors (1).

198858001 is an equidigital number, since it uses as much as digits as its factorization.

198858001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 40.

The square root of 198858001 is about 14101.7020603897. The cubic root of 198858001 is about 583.6883472343.

The spelling of 198858001 in words is "one hundred ninety-eight million, eight hundred fifty-eight thousand, one".