819068919 has 16 divisors (see below), whose sum is σ = 1107870720. Its totient is φ = 538181280.

The previous prime is 819068917. The next prime is 819068933. The reversal of 819068919 is 919860918.

It is a happy number.

It is not a de Polignac number, because 819068919 - 2¹ = 819068917 is a prime.

It is a super-2 number, since 2×819068919² = 1341747788143657122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (819068917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146809 + ... + 152285.

It is an arithmetic number, because the mean of its divisors is an integer number (69241920).

Almost surely, 2^819068919 is an apocalyptic number.

819068919 is a deficient number, since it is larger than the sum of its proper divisors (288801801).

819068919 is a wasteful number, since it uses less digits than its factorization.

819068919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6190.

The product of its (nonzero) digits is 279936, while the sum is 51.

The square root of 819068919 is about 28619.3801295556. The cubic root of 819068919 is about 935.6357669034.

The spelling of 819068919 in words is "eight hundred nineteen million, sixty-eight thousand, nine hundred nineteen".