1665080793 has 20 divisors (see below), whose sum is σ = 2633659380. Its totient is φ = 1044755712.

The previous prime is 1665080783. The next prime is 1665080819. The reversal of 1665080793 is 3970805661.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1324013769 + 341067024 = 36387^2 + 18468^2 .

It is not a de Polignac number, because 1665080793 - 2⁹ = 1665080281 is a prime.

It is a super-3 number, since 3×1665080793³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1665080723) 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 19 ways as a sum of consecutive naturals, for example, 603228 + ... + 605981.

It is an arithmetic number, because the mean of its divisors is an integer number (131682969).

Almost surely, 2^1665080793 is an apocalyptic number.

It is an amenable number.

1665080793 is a deficient number, since it is larger than the sum of its proper divisors (968578587).

1665080793 is a wasteful number, since it uses less digits than its factorization.

1665080793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1209238 (or 1209229 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 1665080793 is about 40805.4015174462. The cubic root of 1665080793 is about 1185.2549299309.

The spelling of 1665080793 in words is "one billion, six hundred sixty-five million, eighty thousand, seven hundred ninety-three".