3693399920 has 80 divisors (see below), whose sum is σ = 9841179648. Its totient is φ = 1262787840.

The previous prime is 3693399917. The next prime is 3693399937. The reversal of 3693399920 is 299933963.

It is a happy number.

3693399920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196535 + ... + 214505.

Almost surely, 2^3693399920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3693399920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4920589824).

3693399920 is an abundant number, since it is smaller than the sum of its proper divisors (6147779728).

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

3693399920 is a wasteful number, since it uses less digits than its factorization.

3693399920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18358 (or 18352 counting only the distinct ones).

The product of its (nonzero) digits is 2125764, while the sum is 53.

The square root of 3693399920 is about 60773.3487640759. The cubic root of 3693399920 is about 1545.7601674616.

The spelling of 3693399920 in words is "three billion, six hundred ninety-three million, three hundred ninety-nine thousand, nine hundred twenty".