1008981 has 12 divisors (see below), whose sum is σ = 1478880. Its totient is φ = 662760.

The previous prime is 1008979. The next prime is 1008983. The reversal of 1008981 is 1898001.

It is an interprime number because it is at equal distance from previous prime (1008979) and next prime (1008983).

It is not a de Polignac number, because 1008981 - 2¹ = 1008979 is a prime.

It is a super-2 number, since 2×1008981² = 2036085316722, which contains 22 as substring.

It is a Curzon number.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1008983) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 151 + ... + 1428.

It is an arithmetic number, because the mean of its divisors is an integer number (123240).

2^1008981 is an apocalyptic number.

It is an amenable number.

1008981 is a deficient number, since it is larger than the sum of its proper divisors (469899).

1008981 is a wasteful number, since it uses less digits than its factorization.

1008981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1656 (or 1653 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 27.

The square root of 1008981 is about 1004.4804627269. The cubic root of 1008981 is about 100.2984749076.

The spelling of 1008981 in words is "one million, eight thousand, nine hundred eighty-one".