1330655440 has 40 divisors (see below), whose sum is σ = 3095301888. Its totient is φ = 531999360.

The previous prime is 1330655429. The next prime is 1330655449. The reversal of 1330655440 is 445560331.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1330655449) 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, 287545 + ... + 292135.

Almost surely, 2^1330655440 is an apocalyptic number.

1330655440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1330655440 is an abundant number, since it is smaller than the sum of its proper divisors (1764646448).

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

1330655440 is a wasteful number, since it uses less digits than its factorization.

1330655440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8227 (or 8221 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 1330655440 is about 36478.1501723977. The cubic root of 1330655440 is about 1099.9050716979.

The spelling of 1330655440 in words is "one billion, three hundred thirty million, six hundred fifty-five thousand, four hundred forty".