1330221536 has 48 divisors (see below), whose sum is σ = 3019542624. Its totient is φ = 565039104.

The previous prime is 1330221523. The next prime is 1330221587. The reversal of 1330221536 is 6351220331.

It is a super-3 number, since 3×1330221536³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 965 + ... + 51588.

It is an arithmetic number, because the mean of its divisors is an integer number (62907138).

Almost surely, 2^1330221536 is an apocalyptic number.

1330221536 is a gapful number since it is divisible by the number (16) 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 1330221536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1509771312).

1330221536 is an abundant number, since it is smaller than the sum of its proper divisors (1689321088).

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

1330221536 is a wasteful number, since it uses less digits than its factorization.

1330221536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52683 (or 52675 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 1330221536 is about 36472.2022367720. The cubic root of 1330221536 is about 1099.7855052847.

Adding to 1330221536 its reverse (6351220331), we get a palindrome (7681441867).

The spelling of 1330221536 in words is "one billion, three hundred thirty million, two hundred twenty-one thousand, five hundred thirty-six".