1988958 has 32 divisors (see below), whose sum is σ = 4262400. Its totient is φ = 616896.

The previous prime is 1988941. The next prime is 1988963. The reversal of 1988958 is 8598891.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 8203 + ... + 8441.

It is an arithmetic number, because the mean of its divisors is an integer number (133200).

2^1988958 is an apocalyptic number.

1988958 is an abundant number, since it is smaller than the sum of its proper divisors (2273442).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1988958 is a wasteful number, since it uses less digits than its factorization.

1988958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336.

The product of its digits is 207360, while the sum is 48.

The square root of 1988958 is about 1410.3042224995. The cubic root of 1988958 is about 125.7598094918.

The spelling of 1988958 in words is "one million, nine hundred eighty-eight thousand, nine hundred fifty-eight".