1330781540 has 24 divisors (see below), whose sum is σ = 3048700032. Its totient is φ = 483920480.

The previous prime is 1330781483. The next prime is 1330781549. The reversal of 1330781540 is 451870331.

It is a junction number, because it is equal to n+sod(n) for n = 1330781497 and 1330781506.

It is not an unprimeable number, because it can be changed into a prime (1330781549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3024284 + ... + 3024723.

It is an arithmetic number, because the mean of its divisors is an integer number (127029168).

Almost surely, 2^1330781540 is an apocalyptic number.

1330781540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1330781540 is an abundant number, since it is smaller than the sum of its proper divisors (1717918492).

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

1330781540 is a wasteful number, since it uses less digits than its factorization.

1330781540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6049027 (or 6049025 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 1330781540 is about 36479.8785633944. The cubic root of 1330781540 is about 1099.9398148889.

The spelling of 1330781540 in words is "one billion, three hundred thirty million, seven hundred eighty-one thousand, five hundred forty".