819457368 has 32 divisors (see below), whose sum is σ = 2052879360. Its totient is φ = 272587680.

The previous prime is 819457367. The next prime is 819457427. The reversal of 819457368 is 863754918.

It is a super-4 number, since 4×819457368⁴ (a number of 37 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 819457368.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (819457367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23368 + ... + 46743.

It is an arithmetic number, because the mean of its divisors is an integer number (64152480).

Almost surely, 2^819457368 is an apocalyptic number.

It is an amenable number.

819457368 is an abundant number, since it is smaller than the sum of its proper divisors (1233421992).

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

819457368 is a wasteful number, since it uses less digits than its factorization.

819457368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70607 (or 70603 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 51.

The square root of 819457368 is about 28626.1657928546. The cubic root of 819457368 is about 935.7836540669.

The spelling of 819457368 in words is "eight hundred nineteen million, four hundred fifty-seven thousand, three hundred sixty-eight".