1988133 has 16 divisors (see below), whose sum is σ = 3208320. Its totient is φ = 1069056.

The previous prime is 1988113. The next prime is 1988137. The reversal of 1988133 is 3318891.

It is not a de Polignac number, because 1988133 - 2⁵ = 1988101 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1988094 and 1988103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1988137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2428 + ... + 3141.

It is an arithmetic number, because the mean of its divisors is an integer number (200520).

2^1988133 is an apocalyptic number.

It is an amenable number.

1988133 is a deficient number, since it is larger than the sum of its proper divisors (1220187).

1988133 is a wasteful number, since it uses less digits than its factorization.

1988133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5596.

The product of its digits is 5184, while the sum is 33.

The square root of 1988133 is about 1410.0117020791. The cubic root of 1988133 is about 125.7424191144.

Subtracting from 1988133 its sum of digits (33), we obtain a square (1988100 = 1410²).

The spelling of 1988133 in words is "one million, nine hundred eighty-eight thousand, one hundred thirty-three".