1665141015 has 32 divisors (see below), whose sum is σ = 2719111680. Its totient is φ = 869837696.

The previous prime is 1665140989. The next prime is 1665141031. The reversal of 1665141015 is 5101415661.

It is not a de Polignac number, because 1665141015 - 2⁷ = 1665140887 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 589276 + ... + 592094.

It is an arithmetic number, because the mean of its divisors is an integer number (84972240).

Almost surely, 2^1665141015 is an apocalyptic number.

1665141015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1665141015 is a deficient number, since it is larger than the sum of its proper divisors (1053970665).

1665141015 is a wasteful number, since it uses less digits than its factorization.

1665141015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3623.

The product of its (nonzero) digits is 3600, while the sum is 30.

The square root of 1665141015 is about 40806.1394277871. The cubic root of 1665141015 is about 1185.2692190397.

Adding to 1665141015 its reverse (5101415661), we get a palindrome (6766556676).

The spelling of 1665141015 in words is "one billion, six hundred sixty-five million, one hundred forty-one thousand, fifteen".