2139683565 has 8 divisors (see below), whose sum is σ = 3423493728. Its totient is φ = 1141164560.

The previous prime is 2139683561. The next prime is 2139683587. The reversal of 2139683565 is 5653869312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2139683565 - 2² = 2139683561 is a prime.

It is a super-2 number, since 2×2139683565² = 9156491516662218450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2139683561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71322771 + ... + 71322800.

It is an arithmetic number, because the mean of its divisors is an integer number (427936716).

Almost surely, 2^2139683565 is an apocalyptic number.

It is an amenable number.

2139683565 is a deficient number, since it is larger than the sum of its proper divisors (1283810163).

2139683565 is a wasteful number, since it uses less digits than its factorization.

2139683565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142645579.

The product of its digits is 1166400, while the sum is 48.

The square root of 2139683565 is about 46256.7137289280. The cubic root of 2139683565 is about 1288.5952227867.

The spelling of 2139683565 in words is "two billion, one hundred thirty-nine million, six hundred eighty-three thousand, five hundred sixty-five".