4564518778 has 8 divisors (see below), whose sum is σ = 6910767072. Its totient is φ = 2260929756.

The previous prime is 4564518769. The next prime is 4564518779. The reversal of 4564518778 is 8778154654.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×4564518778² = 41669663349429226568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4564518779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10664550 + ... + 10664977.

It is an arithmetic number, because the mean of its divisors is an integer number (863845884).

Almost surely, 2^4564518778 is an apocalyptic number.

4564518778 is a deficient number, since it is larger than the sum of its proper divisors (2346248294).

4564518778 is a wasteful number, since it uses less digits than its factorization.

4564518778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21329636.

The product of its digits is 7526400, while the sum is 55.

The square root of 4564518778 is about 67561.2224430553. Note that the first 3 decimals coincide. The cubic root of 4564518778 is about 1658.8164469547.

The spelling of 4564518778 in words is "four billion, five hundred sixty-four million, five hundred eighteen thousand, seven hundred seventy-eight".