1009481320 has 16 divisors (see below), whose sum is σ = 2271333060. Its totient is φ = 403792512.

The previous prime is 1009481311. The next prime is 1009481321. The reversal of 1009481320 is 231849001.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 965842084 + 43639236 = 31078^2 + 6606^2 .

It is not an unprimeable number, because it can be changed into a prime (1009481321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12618477 + ... + 12618556.

Almost surely, 2^1009481320 is an apocalyptic number.

1009481320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1009481320 is an abundant number, since it is smaller than the sum of its proper divisors (1261851740).

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

1009481320 is a wasteful number, since it uses less digits than its factorization.

1009481320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25237044 (or 25237040 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1009481320 is about 31772.3357655681. The cubic root of 1009481320 is about 1003.1505039015.

The spelling of 1009481320 in words is "one billion, nine million, four hundred eighty-one thousand, three hundred twenty".