1665583485 has 32 divisors (see below), whose sum is σ = 2724395520. Its totient is φ = 868684608.

The previous prime is 1665583481. The next prime is 1665583523. The reversal of 1665583485 is 5843855661.

It is a happy number.

It is not a de Polignac number, because 1665583485 - 2² = 1665583481 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1665583481) by changing a digit.

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, 133734 + ... + 145656.

It is an arithmetic number, because the mean of its divisors is an integer number (85137360).

Almost surely, 2^1665583485 is an apocalyptic number.

1665583485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1665583485 is a deficient number, since it is larger than the sum of its proper divisors (1058812035).

1665583485 is a wasteful number, since it uses less digits than its factorization.

1665583485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12137.

The product of its digits is 3456000, while the sum is 51.

The square root of 1665583485 is about 40811.5606783176. The cubic root of 1665583485 is about 1185.3741950589.

The spelling of 1665583485 in words is "one billion, six hundred sixty-five million, five hundred eighty-three thousand, four hundred eighty-five".