1988943 has 8 divisors (see below), whose sum is σ = 2893056. Its totient is φ = 1205400.

The previous prime is 1988941. The next prime is 1988963. The reversal of 1988943 is 3498891.

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

It is not a de Polignac number, because 1988943 - 2¹ = 1988941 is a prime.

1988943 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1988895 and 1988904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1988941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30103 + ... + 30168.

It is an arithmetic number, because the mean of its divisors is an integer number (361632).

2^1988943 is an apocalyptic number.

1988943 is a deficient number, since it is larger than the sum of its proper divisors (904113).

1988943 is a wasteful number, since it uses less digits than its factorization.

1988943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60285.

The product of its digits is 62208, while the sum is 42.

The square root of 1988943 is about 1410.2989044880. The cubic root of 1988943 is about 125.7594933461.

The spelling of 1988943 in words is "one million, nine hundred eighty-eight thousand, nine hundred forty-three".