819854098431 has 16 divisors (see below), whose sum is σ = 1128469813248. Its totient is φ = 528906031200.

The previous prime is 819854098429. The next prime is 819854098457. The reversal of 819854098431 is 134890458918.

It is not a de Polignac number, because 819854098431 - 2¹ = 819854098429 is a prime.

It is a super-2 number, since 2×819854098431² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (819854098631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1323990 + ... + 1841916.

It is an arithmetic number, because the mean of its divisors is an integer number (70529363328).

Almost surely, 2^819854098431 is an apocalyptic number.

819854098431 is a deficient number, since it is larger than the sum of its proper divisors (308615714817).

819854098431 is a wasteful number, since it uses less digits than its factorization.

819854098431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534982.

The product of its (nonzero) digits is 9953280, while the sum is 60.

The spelling of 819854098431 in words is "eight hundred nineteen billion, eight hundred fifty-four million, ninety-eight thousand, four hundred thirty-one".