819558096941 has 4 divisors (see below), whose sum is σ = 819566229084. Its totient is φ = 819549964800.

The previous prime is 819558096883. The next prime is 819558096943. The reversal of 819558096941 is 149690855918.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 288621445225 + 530936651716 = 537235^2 + 728654^2 .

It is a cyclic number.

It is not a de Polignac number, because 819558096941 - 2²² = 819553902637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (819558096943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3912980 + ... + 4117101.

It is an arithmetic number, because the mean of its divisors is an integer number (204891557271).

Almost surely, 2^819558096941 is an apocalyptic number.

It is an amenable number.

819558096941 is a deficient number, since it is larger than the sum of its proper divisors (8132143).

819558096941 is a wasteful number, since it uses less digits than its factorization.

819558096941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8132142.

The product of its (nonzero) digits is 27993600, while the sum is 65.

The spelling of 819558096941 in words is "eight hundred nineteen billion, five hundred fifty-eight million, ninety-six thousand, nine hundred forty-one".