1065081919 has 4 divisors (see below), whose sum is σ = 1161907560. Its totient is φ = 968256280.

The previous prime is 1065081893. The next prime is 1065081929. The reversal of 1065081919 is 9191805601.

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

It is a cyclic number.

It is not a de Polignac number, because 1065081919 - 2¹¹ = 1065079871 is a prime.

It is a super-2 number, since 2×1065081919² = 2268798988361445122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1065081929) 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 3 ways as a sum of consecutive naturals, for example, 48412804 + ... + 48412825.

It is an arithmetic number, because the mean of its divisors is an integer number (290476890).

Almost surely, 2^1065081919 is an apocalyptic number.

1065081919 is a deficient number, since it is larger than the sum of its proper divisors (96825641).

1065081919 is an equidigital number, since it uses as much as digits as its factorization.

1065081919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96825640.

The product of its (nonzero) digits is 19440, while the sum is 40.

The square root of 1065081919 is about 32635.5928243996. The cubic root of 1065081919 is about 1021.2396561093.

The spelling of 1065081919 in words is "one billion, sixty-five million, eighty-one thousand, nine hundred nineteen".