2143692609 has 4 divisors (see below), whose sum is σ = 2858256816. Its totient is φ = 1429128404.

The previous prime is 2143692553. The next prime is 2143692619. The reversal of 2143692609 is 9062963412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2143692609 - 2¹² = 2143688513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2143692619) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 357282099 + ... + 357282104.

It is an arithmetic number, because the mean of its divisors is an integer number (714564204).

Almost surely, 2^2143692609 is an apocalyptic number.

It is an amenable number.

2143692609 is a deficient number, since it is larger than the sum of its proper divisors (714564207).

2143692609 is an equidigital number, since it uses as much as digits as its factorization.

2143692609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714564206.

The product of its (nonzero) digits is 139968, while the sum is 42.

The square root of 2143692609 is about 46300.0281749374. The cubic root of 2143692609 is about 1289.3995180132.

The spelling of 2143692609 in words is "two billion, one hundred forty-three million, six hundred ninety-two thousand, six hundred nine".