819764434 has 32 divisors (see below), whose sum is σ = 1292368896. Its totient is φ = 389525760.

The previous prime is 819764417. The next prime is 819764453. The reversal of 819764434 is 434467918.

819764434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 874414 + ... + 875350.

It is an arithmetic number, because the mean of its divisors is an integer number (40386528).

Almost surely, 2^819764434 is an apocalyptic number.

819764434 is a deficient number, since it is larger than the sum of its proper divisors (472604462).

819764434 is a wasteful number, since it uses less digits than its factorization.

819764434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1210.

The product of its digits is 580608, while the sum is 46.

The square root of 819764434 is about 28631.5286703312. The cubic root of 819764434 is about 935.9005246818.

The spelling of 819764434 in words is "eight hundred nineteen million, seven hundred sixty-four thousand, four hundred thirty-four".