3649560540 has 96 divisors (see below), whose sum is σ = 10385444160. Its totient is φ = 957413376.

The previous prime is 3649560539. The next prime is 3649560557. The reversal of 3649560540 is 450659463.

It is a junction number, because it is equal to n+sod(n) for n = 3649560492 and 3649560501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2228602 + ... + 2230238.

It is an arithmetic number, because the mean of its divisors is an integer number (108181710).

Almost surely, 2^3649560540 is an apocalyptic number.

3649560540 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 3649560540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5192722080).

3649560540 is an abundant number, since it is smaller than the sum of its proper divisors (6735883620).

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

3649560540 is a wasteful number, since it uses less digits than its factorization.

3649560540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2231 (or 2229 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 42.

The square root of 3649560540 is about 60411.5927616546. The cubic root of 3649560540 is about 1539.6199292571.

The spelling of 3649560540 in words is "three billion, six hundred forty-nine million, five hundred sixty thousand, five hundred forty".