819410964381 has 6 divisors (see below), whose sum is σ = 1183593615230. Its totient is φ = 546273976248.

The previous prime is 819410964373. The next prime is 819410964403. The reversal of 819410964381 is 183469014918.

819410964381 is a `hidden beast` number, since 8 + 194 + 10 + 9 + 6 + 438 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 798683603481 + 20727360900 = 893691^2 + 143970^2 .

It is not a de Polignac number, because 819410964381 - 2³ = 819410964373 is a prime.

It is a super-2 number, since 2×819410964381² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (819410963381) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 45522831346 + ... + 45522831363.

Almost surely, 2^819410964381 is an apocalyptic number.

It is an amenable number.

819410964381 is a deficient number, since it is larger than the sum of its proper divisors (364182650849).

819410964381 is a wasteful number, since it uses less digits than its factorization.

819410964381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91045662715 (or 91045662712 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 54.

The spelling of 819410964381 in words is "eight hundred nineteen billion, four hundred ten million, nine hundred sixty-four thousand, three hundred eighty-one".