1665103365 has 16 divisors (see below), whose sum is σ = 2960184000. Its totient is φ = 888055056.

The previous prime is 1665103337. The next prime is 1665103373. The reversal of 1665103365 is 5633015661.

It is not a de Polignac number, because 1665103365 - 2⁸ = 1665103109 is a prime.

It is a super-2 number, since 2×1665103365² = 5545138432268646450, which contains 22 as substring.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 6166915 + ... + 6167184.

It is an arithmetic number, because the mean of its divisors is an integer number (185011500).

Almost surely, 2^1665103365 is an apocalyptic number.

1665103365 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1665103365 is a deficient number, since it is larger than the sum of its proper divisors (1295080635).

1665103365 is a wasteful number, since it uses less digits than its factorization.

1665103365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12334113 (or 12334107 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 36.

The square root of 1665103365 is about 40805.6780975393. The cubic root of 1665103365 is about 1185.2602857177.

The spelling of 1665103365 in words is "one billion, six hundred sixty-five million, one hundred three thousand, three hundred sixty-five".