2103665579 has 4 divisors (see below), whose sum is σ = 2214384840. Its totient is φ = 1992946320.

The previous prime is 2103665567. The next prime is 2103665587. The reversal of 2103665579 is 9755663012.

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 2103665579 - 2²⁰ = 2102617003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2103665519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55359602 + ... + 55359639.

It is an arithmetic number, because the mean of its divisors is an integer number (553596210).

Almost surely, 2^2103665579 is an apocalyptic number.

2103665579 is a deficient number, since it is larger than the sum of its proper divisors (110719261).

2103665579 is a wasteful number, since it uses less digits than its factorization.

2103665579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110719260.

The product of its (nonzero) digits is 340200, while the sum is 44.

The square root of 2103665579 is about 45865.7342577223. The cubic root of 2103665579 is about 1281.3238214249.

The spelling of 2103665579 in words is "two billion, one hundred three million, six hundred sixty-five thousand, five hundred seventy-nine".