819312589464 has 64 divisors (see below), whose sum is σ = 2079262617600. Its totient is φ = 269004322944.

The previous prime is 819312589423. The next prime is 819312589549. The reversal of 819312589464 is 464985213918.

It is a junction number, because it is equal to n+sod(n) for n = 819312589398 and 819312589407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 543247 + ... + 1390590.

It is an arithmetic number, because the mean of its divisors is an integer number (32488478400).

Almost surely, 2^819312589464 is an apocalyptic number.

It is an amenable number.

819312589464 is an abundant number, since it is smaller than the sum of its proper divisors (1259950028136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

819312589464 is a wasteful number, since it uses less digits than its factorization.

819312589464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1934112 (or 1934108 counting only the distinct ones).

The product of its digits is 14929920, while the sum is 60.

The spelling of 819312589464 in words is "eight hundred nineteen billion, three hundred twelve million, five hundred eighty-nine thousand, four hundred sixty-four".