1998933 has 8 divisors (see below), whose sum is σ = 2805600. Its totient is φ = 1262448.

The previous prime is 1998923. The next prime is 1998943. The reversal of 1998933 is 3398991.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1998923) and next prime (1998943).

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

It is not a de Polignac number, because 1998933 - 2⁴ = 1998917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1998923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17478 + ... + 17591.

It is an arithmetic number, because the mean of its divisors is an integer number (350700).

2^1998933 is an apocalyptic number.

It is an amenable number.

1998933 is a deficient number, since it is larger than the sum of its proper divisors (806667).

1998933 is a wasteful number, since it uses less digits than its factorization.

1998933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35091.

The product of its digits is 52488, while the sum is 42.

The square root of 1998933 is about 1413.8362705773. The cubic root of 1998933 is about 125.9696954078.

The spelling of 1998933 in words is "one million, nine hundred ninety-eight thousand, nine hundred thirty-three".