1998814 has 8 divisors (see below), whose sum is σ = 3079368. Its totient is φ = 972360.

The previous prime is 1998793. The next prime is 1998817. The reversal of 1998814 is 4188991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×1998814³ = 23957329313723331432, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1998817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13432 + ... + 13579.

It is an arithmetic number, because the mean of its divisors is an integer number (384921).

2^1998814 is an apocalyptic number.

1998814 is a deficient number, since it is larger than the sum of its proper divisors (1080554).

1998814 is a wasteful number, since it uses less digits than its factorization.

1998814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27050.

The product of its digits is 20736, while the sum is 40.

The square root of 1998814 is about 1413.7941858701. The cubic root of 1998814 is about 125.9671956257.

It can be divided in two parts, 19988 and 14, that added together give a palindrome (20002).

The spelling of 1998814 in words is "one million, nine hundred ninety-eight thousand, eight hundred fourteen".