3578995640 has 64 divisors (see below), whose sum is σ = 8797317120. Its totient is φ = 1299600000.

The previous prime is 3578995639. The next prime is 3578995643. The reversal of 3578995640 is 465998753.

It is a happy number.

3578995640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3578995640² = 25618419582278019200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3578995643) 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, 325025 + ... + 335855.

It is an arithmetic number, because the mean of its divisors is an integer number (137458080).

Almost surely, 2^3578995640 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 3578995640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4398658560).

3578995640 is an abundant number, since it is smaller than the sum of its proper divisors (5218321480).

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

3578995640 is a wasteful number, since it uses less digits than its factorization.

3578995640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11604 (or 11600 counting only the distinct ones).

The product of its (nonzero) digits is 8164800, while the sum is 56.

The square root of 3578995640 is about 59824.7076048015. The cubic root of 3578995640 is about 1529.6323379319.

The spelling of 3578995640 in words is "three billion, five hundred seventy-eight million, nine hundred ninety-five thousand, six hundred forty".