3558530778 has 64 divisors (see below), whose sum is σ = 7868067840. Its totient is φ = 1063976000.

The previous prime is 3558530761. The next prime is 3558530819. The reversal of 3558530778 is 8770358553.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 3558530778.

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, 2392351 + ... + 2393837.

It is an arithmetic number, because the mean of its divisors is an integer number (122938560).

Almost surely, 2^3558530778 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3558530778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3934033920).

3558530778 is an abundant number, since it is smaller than the sum of its proper divisors (4309537062).

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

3558530778 is a wasteful number, since it uses less digits than its factorization.

3558530778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1963.

The product of its (nonzero) digits is 3528000, while the sum is 51.

The square root of 3558530778 is about 59653.4221817994. The cubic root of 3558530778 is about 1526.7112604858.

The spelling of 3558530778 in words is "three billion, five hundred fifty-eight million, five hundred thirty thousand, seven hundred seventy-eight".