819113 has 4 divisors (see below), whose sum is σ = 845568. Its totient is φ = 792660.

The previous prime is 819101. The next prime is 819131. The reversal of 819113 is 311918.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 819113 - 2¹⁴ = 802729 is a prime.

It is a super-2 number, since 2×819113² = 1341892213538, which contains 22 as substring.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 819113.

It is not an unprimeable number, because it can be changed into a prime (819173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13181 + ... + 13242.

It is an arithmetic number, because the mean of its divisors is an integer number (211392).

2⁸¹⁹¹¹³ is an apocalyptic number.

It is an amenable number.

819113 is a deficient number, since it is larger than the sum of its proper divisors (26455).

819113 is a wasteful number, since it uses less digits than its factorization.

819113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26454.

The product of its digits is 216, while the sum is 23.

The square root of 819113 is about 905.0486174786. The cubic root of 819113 is about 93.5652551417.

The spelling of 819113 in words is "eight hundred nineteen thousand, one hundred thirteen".