5509779418 has 16 divisors (see below), whose sum is σ = 9709541856. Its totient is φ = 2311795440.

The previous prime is 5509779367. The next prime is 5509779419. The reversal of 5509779418 is 8149779055.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (5509779419) 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, 9632196 + ... + 9632767.

It is an arithmetic number, because the mean of its divisors is an integer number (606846366).

Almost surely, 2^5509779418 is an apocalyptic number.

5509779418 is a deficient number, since it is larger than the sum of its proper divisors (4199762438).

5509779418 is a wasteful number, since it uses less digits than its factorization.

5509779418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19264989.

The product of its (nonzero) digits is 3175200, while the sum is 55.

The square root of 5509779418 is about 74227.8884112973. Note that the first 3 decimals coincide. The cubic root of 5509779418 is about 1766.2197528055.

The spelling of 5509779418 in words is "five billion, five hundred nine million, seven hundred seventy-nine thousand, four hundred eighteen".