1000981488 has 160 divisors (see below), whose sum is σ = 2975809536. Its totient is φ = 287207424.

The previous prime is 1000981483. The next prime is 1000981493. The reversal of 1000981488 is 8841890001.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1000981483) and next prime (1000981493).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000981481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1346845 + ... + 1347587.

Almost surely, 2^1000981488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1000981488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1487904768).

1000981488 is an abundant number, since it is smaller than the sum of its proper divisors (1974828048).

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

1000981488 is a wasteful number, since it uses less digits than its factorization.

1000981488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911 (or 905 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 39.

The square root of 1000981488 is about 31638.2914835805. The cubic root of 1000981488 is about 1000.3270556896.

The spelling of 1000981488 in words is "one billion, nine hundred eighty-one thousand, four hundred eighty-eight".