1330545320 has 64 divisors (see below), whose sum is σ = 3228437520. Its totient is φ = 490604544.

The previous prime is 1330545287. The next prime is 1330545329. The reversal of 1330545320 is 235450331.

It can be written as a sum of positive squares in 8 ways, for example, as 710435716 + 620109604 = 26654^2 + 24902^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 1330545320.

It is not an unprimeable number, because it can be changed into a prime (1330545329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 535922 + ... + 538398.

Almost surely, 2^1330545320 is an apocalyptic number.

1330545320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1330545320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1614218760).

1330545320 is an abundant number, since it is smaller than the sum of its proper divisors (1897892200).

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

1330545320 is a wasteful number, since it uses less digits than its factorization.

1330545320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3534 (or 3530 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 1330545320 is about 36476.6407444545. The cubic root of 1330545320 is about 1099.8747295361.

Adding to 1330545320 its reverse (235450331), we get a palindrome (1565995651).

The spelling of 1330545320 in words is "one billion, three hundred thirty million, five hundred forty-five thousand, three hundred twenty".