1898199 has 6 divisors (see below), whose sum is σ = 2741856. Its totient is φ = 1265460.

The previous prime is 1898179. The next prime is 1898201. The reversal of 1898199 is 9918981.

It is not a de Polignac number, because 1898199 - 2⁸ = 1897943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1898179) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 105447 + ... + 105464.

It is an arithmetic number, because the mean of its divisors is an integer number (456976).

2^1898199 is an apocalyptic number.

1898199 is a deficient number, since it is larger than the sum of its proper divisors (843657).

1898199 is a wasteful number, since it uses less digits than its factorization.

1898199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210917 (or 210914 counting only the distinct ones).

The product of its digits is 46656, while the sum is 45.

The square root of 1898199 is about 1377.7514289595. The cubic root of 1898199 is about 123.8170863677.

The spelling of 1898199 in words is "one million, eight hundred ninety-eight thousand, one hundred ninety-nine".