1988275 has 6 divisors (see below), whose sum is σ = 2465492. Its totient is φ = 1590600.

The previous prime is 1988267. The next prime is 1988279. The reversal of 1988275 is 5728891.

It is not a de Polignac number, because 1988275 - 2³ = 1988267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1988279) 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 5 ways as a sum of consecutive naturals, for example, 39741 + ... + 39790.

2^1988275 is an apocalyptic number.

1988275 is a deficient number, since it is larger than the sum of its proper divisors (477217).

1988275 is an equidigital number, since it uses as much as digits as its factorization.

1988275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79541 (or 79536 counting only the distinct ones).

The product of its digits is 40320, while the sum is 40.

The square root of 1988275 is about 1410.0620553720. The cubic root of 1988275 is about 125.7454127099.

The spelling of 1988275 in words is "one million, nine hundred eighty-eight thousand, two hundred seventy-five".