1665352465 has 16 divisors (see below), whose sum is σ = 2330524800. Its totient is φ = 1141954800.

The previous prime is 1665352439. The next prime is 1665352483. The reversal of 1665352465 is 5642535661.

It is not a de Polignac number, because 1665352465 - 2⁵ = 1665352433 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 483811 + ... + 487240.

It is an arithmetic number, because the mean of its divisors is an integer number (145657800).

Almost surely, 2^1665352465 is an apocalyptic number.

It is an amenable number.

1665352465 is a deficient number, since it is larger than the sum of its proper divisors (665172335).

1665352465 is an frugal number, since it uses more digits than its factorization.

1665352465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971077 (or 971063 counting only the distinct ones).

The product of its digits is 648000, while the sum is 43.

The square root of 1665352465 is about 40808.7302546894. The cubic root of 1665352465 is about 1185.3193878775.

The spelling of 1665352465 in words is "one billion, six hundred sixty-five million, three hundred fifty-two thousand, four hundred sixty-five".