234778464819 has 8 divisors (see below), whose sum is σ = 347819947920. Its totient is φ = 156518976528.

The previous prime is 234778464787. The next prime is 234778464821. The reversal of 234778464819 is 918464877432.

234778464819 is a `hidden beast` number, since 2 + 3 + 4 + 77 + 84 + 6 + 481 + 9 = 666.

234778464819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 234778464819 - 2⁵ = 234778464787 is a prime.

It is a super-2 number, since 2×234778464819² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (234778469819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4347749322 + ... + 4347749375.

It is an arithmetic number, because the mean of its divisors is an integer number (43477493490).

Almost surely, 2^234778464819 is an apocalyptic number.

234778464819 is a deficient number, since it is larger than the sum of its proper divisors (113041483101).

234778464819 is an equidigital number, since it uses as much as digits as its factorization.

234778464819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8695498706 (or 8695498700 counting only the distinct ones).

The product of its digits is 65028096, while the sum is 63.

The spelling of 234778464819 in words is "two hundred thirty-four billion, seven hundred seventy-eight million, four hundred sixty-four thousand, eight hundred nineteen".