3663911920 has 20 divisors (see below), whose sum is σ = 8518595400. Its totient is φ = 1465564736.

The previous prime is 3663911833. The next prime is 3663911921. The reversal of 3663911920 is 291193663.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3663911921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22899370 + ... + 22899529.

It is an arithmetic number, because the mean of its divisors is an integer number (425929770).

Almost surely, 2^3663911920 is an apocalyptic number.

It is an amenable number.

3663911920 is an abundant number, since it is smaller than the sum of its proper divisors (4854683480).

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

3663911920 is a wasteful number, since it uses less digits than its factorization.

3663911920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45798912 (or 45798906 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 3663911920 is about 60530.2562360346. The cubic root of 3663911920 is about 1541.6354021547.

The spelling of 3663911920 in words is "three billion, six hundred sixty-three million, nine hundred eleven thousand, nine hundred twenty".