1330945920 has 96 divisors (see below), whose sum is σ = 4595942520. Its totient is φ = 354917376.

The previous prime is 1330945897. The next prime is 1330945921. The reversal of 1330945920 is 295490331.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1330945921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 109774 + ... + 121293.

Almost surely, 2^1330945920 is an apocalyptic number.

1330945920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1330945920 is an abundant number, since it is smaller than the sum of its proper divisors (3264996600).

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

1330945920 is a wasteful number, since it uses less digits than its factorization.

1330945920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231092 (or 231077 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 1330945920 is about 36482.1315166754. The cubic root of 1330945920 is about 1099.9851017266.

The spelling of 1330945920 in words is "one billion, three hundred thirty million, nine hundred forty-five thousand, nine hundred twenty".