3965338320 has 40 divisors (see below), whose sum is σ = 12292549536. Its totient is φ = 1057423488.

The previous prime is 3965338313. The next prime is 3965338331. The reversal of 3965338320 is 238335693.

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

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, 8260882 + ... + 8261361.

Almost surely, 2^3965338320 is an apocalyptic number.

3965338320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3965338320 is an abundant number, since it is smaller than the sum of its proper divisors (8327211216).

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

3965338320 is a wasteful number, since it uses less digits than its factorization.

3965338320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16522259 (or 16522253 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 42.

The square root of 3965338320 is about 62970.9323418353. The cubic root of 3965338320 is about 1582.8025781022.

The spelling of 3965338320 in words is "three billion, nine hundred sixty-five million, three hundred thirty-eight thousand, three hundred twenty".