2043649608 has 256 divisors, whose sum is σ = 6907299840. Its totient is φ = 486604800.

The previous prime is 2043649589. The next prime is 2043649609. The reversal of 2043649608 is 8069463402.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 2043649608.

It is not an unprimeable number, because it can be changed into a prime (2043649609) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6174003 + ... + 6174333.

It is an arithmetic number, because the mean of its divisors is an integer number (26981640).

Almost surely, 2^2043649608 is an apocalyptic number.

2043649608 is a gapful number since it is divisible by the number (28) 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 2043649608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3453649920).

2043649608 is an abundant number, since it is smaller than the sum of its proper divisors (4863650232).

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

2043649608 is a wasteful number, since it uses less digits than its factorization.

2043649608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628 (or 624 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 42.

The square root of 2043649608 is about 45206.7429483700. The cubic root of 2043649608 is about 1269.0210092270.

The spelling of 2043649608 in words is "two billion, forty-three million, six hundred forty-nine thousand, six hundred eight".