1798199 has 4 divisors (see below), whose sum is σ = 1936536. Its totient is φ = 1659864.

The previous prime is 1798189. The next prime is 1798201. The reversal of 1798199 is 9918971.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9918971 = 757 ⋅13103.

It is a cyclic number.

It is not a de Polignac number, because 1798199 - 2⁴ = 1798183 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1798109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69149 + ... + 69174.

It is an arithmetic number, because the mean of its divisors is an integer number (484134).

2^1798199 is an apocalyptic number.

1798199 is a deficient number, since it is larger than the sum of its proper divisors (138337).

1798199 is a wasteful number, since it uses less digits than its factorization.

1798199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138336.

The product of its digits is 40824, while the sum is 44.

The square root of 1798199 is about 1340.9694254531. The cubic root of 1798199 is about 121.6034558329.

The spelling of 1798199 in words is "one million, seven hundred ninety-eight thousand, one hundred ninety-nine".