4043619640 has 64 divisors (see below), whose sum is σ = 9464364000. Its totient is φ = 1552965120.

The previous prime is 4043619617. The next prime is 4043619641. The reversal of 4043619640 is 469163404.

It is a self number, because there is not a number n which added to its sum of digits gives 4043619640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4043619641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200331 + ... + 219589.

Almost surely, 2^4043619640 is an apocalyptic number.

4043619640 is a gapful number since it is divisible by the number (40) 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 4043619640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4732182000).

4043619640 is an abundant number, since it is smaller than the sum of its proper divisors (5420744360).

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

4043619640 is a wasteful number, since it uses less digits than its factorization.

4043619640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19480 (or 19476 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 4043619640 is about 63589.4617055373. The cubic root of 4043619640 is about 1593.1503589811.

The spelling of 4043619640 in words is "four billion, forty-three million, six hundred nineteen thousand, six hundred forty".