4517723378 has 64 divisors (see below), whose sum is σ = 8441376768. Its totient is φ = 1769314560.

The previous prime is 4517723377. The next prime is 4517723381. The reversal of 4517723378 is 8733277154.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is not an unprimeable number, because it can be changed into a prime (4517723377) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1463825 + ... + 1466907.

It is an arithmetic number, because the mean of its divisors is an integer number (131896512).

Almost surely, 2^4517723378 is an apocalyptic number.

4517723378 is a deficient number, since it is larger than the sum of its proper divisors (3923653390).

4517723378 is a wasteful number, since it uses less digits than its factorization.

4517723378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3287.

The product of its digits is 987840, while the sum is 47.

The square root of 4517723378 is about 67214.0117683806. The cubic root of 4517723378 is about 1653.1282408604.

The spelling of 4517723378 in words is "four billion, five hundred seventeen million, seven hundred twenty-three thousand, three hundred seventy-eight".