3649818560 has 56 divisors (see below), whose sum is σ = 8703929760. Its totient is φ = 1457777664.

The previous prime is 3649818559. The next prime is 3649818569. The reversal of 3649818560 is 658189463.

It is a junction number, because it is equal to n+sod(n) for n = 3649818499 and 3649818508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3649818569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218837 + ... + 234923.

Almost surely, 2^3649818560 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 3649818560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4351964880).

3649818560 is an abundant number, since it is smaller than the sum of its proper divisors (5054111200).

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

3649818560 is a wasteful number, since it uses less digits than its factorization.

3649818560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16813 (or 16803 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 50.

The square root of 3649818560 is about 60413.7282411870. The cubic root of 3649818560 is about 1539.6562115591.

The spelling of 3649818560 in words is "three billion, six hundred forty-nine million, eight hundred eighteen thousand, five hundred sixty".