1081988 has 12 divisors (see below), whose sum is σ = 1916880. Its totient is φ = 534312.

The previous prime is 1081981. The next prime is 1082017. The reversal of 1081988 is 8891801.

It is not an unprimeable number, because it can be changed into a prime (1081981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1298 + ... + 1961.

It is an arithmetic number, because the mean of its divisors is an integer number (159740).

2^1081988 is an apocalyptic number.

It is an amenable number.

1081988 is a deficient number, since it is larger than the sum of its proper divisors (834892).

1081988 is a wasteful number, since it uses less digits than its factorization.

1081988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3346 (or 3344 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 35.

The square root of 1081988 is about 1040.1865217354. The cubic root of 1081988 is about 102.6614706615.

The spelling of 1081988 in words is "one million, eighty-one thousand, nine hundred eighty-eight".