3654681344 has 72 divisors (see below), whose sum is σ = 7432719840. Its totient is φ = 1793138688.

The previous prime is 3654681341. The next prime is 3654681353. The reversal of 3654681344 is 4431864563.

It is a junction number, because it is equal to n+sod(n) for n = 3654681295 and 3654681304.

It is not an unprimeable number, because it can be changed into a prime (3654681341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5026709 + ... + 5027435.

It is an arithmetic number, because the mean of its divisors is an integer number (103232220).

Almost surely, 2^3654681344 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 3654681344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3716359920).

3654681344 is an abundant number, since it is smaller than the sum of its proper divisors (3778038496).

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

3654681344 is an equidigital number, since it uses as much as digits as its factorization.

3654681344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085 (or 1071 counting only the distinct ones).

The product of its digits is 829440, while the sum is 44.

The square root of 3654681344 is about 60453.9605319618. The cubic root of 3654681344 is about 1540.3396878154.

The spelling of 3654681344 in words is "three billion, six hundred fifty-four million, six hundred eighty-one thousand, three hundred forty-four".