4778385819 has 16 divisors (see below), whose sum is σ = 6504406272. Its totient is φ = 3119219168.

The previous prime is 4778385817. The next prime is 4778385827. The reversal of 4778385819 is 9185838774.

It is a cyclic number.

It is not a de Polignac number, because 4778385819 - 2¹ = 4778385817 is a prime.

It is a super-2 number, since 2×4778385819² = 45665942070440601522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4778385817) 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, 50104 + ... + 109850.

It is an arithmetic number, because the mean of its divisors is an integer number (406525392).

Almost surely, 2^4778385819 is an apocalyptic number.

4778385819 is a deficient number, since it is larger than the sum of its proper divisors (1726020453).

4778385819 is a wasteful number, since it uses less digits than its factorization.

4778385819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60306.

The product of its digits is 13547520, while the sum is 60.

The square root of 4778385819 is about 69125.8693905545. The cubic root of 4778385819 is about 1684.3295614285.

The spelling of 4778385819 in words is "four billion, seven hundred seventy-eight million, three hundred eighty-five thousand, eight hundred nineteen".