1665160103 has 4 divisors (see below), whose sum is σ = 1682326800. Its totient is φ = 1647993408.

The previous prime is 1665160093. The next prime is 1665160129. The reversal of 1665160103 is 3010615661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1665160103 - 2⁴ = 1665160087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1665160403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8583203 + ... + 8583396.

It is an arithmetic number, because the mean of its divisors is an integer number (420581700).

Almost surely, 2^1665160103 is an apocalyptic number.

1665160103 is a deficient number, since it is larger than the sum of its proper divisors (17166697).

1665160103 is an equidigital number, since it uses as much as digits as its factorization.

1665160103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17166696.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 1665160103 is about 40806.3733134911. The cubic root of 1665160103 is about 1185.2737480520.

Adding to 1665160103 its reverse (3010615661), we get a palindrome (4675775764).

The spelling of 1665160103 in words is "one billion, six hundred sixty-five million, one hundred sixty thousand, one hundred three".