1665465465 has 32 divisors (see below), whose sum is σ = 2739179520. Its totient is φ = 863626176.

The previous prime is 1665465437. The next prime is 1665465479. The reversal of 1665465465 is 5645645661.

It is not a de Polignac number, because 1665465465 - 2⁵ = 1665465433 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 138046 + ... + 149624.

It is an arithmetic number, because the mean of its divisors is an integer number (85599360).

Almost surely, 2^1665465465 is an apocalyptic number.

1665465465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1665465465 is a deficient number, since it is larger than the sum of its proper divisors (1073714055).

1665465465 is a wasteful number, since it uses less digits than its factorization.

1665465465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11853.

The product of its digits is 2592000, while the sum is 48.

The square root of 1665465465 is about 40810.1147388733. The cubic root of 1665465465 is about 1185.3461966290.

The spelling of 1665465465 in words is "one billion, six hundred sixty-five million, four hundred sixty-five thousand, four hundred sixty-five".