3642989660 has 48 divisors (see below), whose sum is σ = 7974420384. Its totient is φ = 1396631808.

The previous prime is 3642989659. The next prime is 3642989663. The reversal of 3642989660 is 669892463.

3642989660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3642989663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12842 + ... + 86318.

It is an arithmetic number, because the mean of its divisors is an integer number (166133758).

Almost surely, 2^3642989660 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 3642989660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3987210192).

3642989660 is an abundant number, since it is smaller than the sum of its proper divisors (4331430724).

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

3642989660 is a wasteful number, since it uses less digits than its factorization.

3642989660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73590 (or 73588 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 53.

The square root of 3642989660 is about 60357.1839966047. The cubic root of 3642989660 is about 1538.6953672166.

The spelling of 3642989660 in words is "three billion, six hundred forty-two million, nine hundred eighty-nine thousand, six hundred sixty".