3689905920 has 144 divisors (see below), whose sum is σ = 11830590240. Its totient is φ = 980140032.

The previous prime is 3689905907. The next prime is 3689905931. The reversal of 3689905920 is 295099863.

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, 1061946 + ... + 1065414.

Almost surely, 2^3689905920 is an apocalyptic number.

3689905920 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3689905920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5915295120).

3689905920 is an abundant number, since it is smaller than the sum of its proper divisors (8140684320).

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

3689905920 is a wasteful number, since it uses less digits than its factorization.

3689905920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3770 (or 3756 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 51.

The square root of 3689905920 is about 60744.5958090100. The cubic root of 3689905920 is about 1545.2725778749.

The spelling of 3689905920 in words is "three billion, six hundred eighty-nine million, nine hundred five thousand, nine hundred twenty".