2144677609 has 4 divisors (see below), whose sum is σ = 2144944516. Its totient is φ = 2144410704.

The previous prime is 2144677559. The next prime is 2144677621. The reversal of 2144677609 is 9067764412.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1156204009 + 988473600 = 34003^2 + 31440^2 .

It is a cyclic number.

It is not a de Polignac number, because 2144677609 - 2¹⁹ = 2144153321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2144677669) 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, 121014 + ... + 137599.

It is an arithmetic number, because the mean of its divisors is an integer number (536236129).

Almost surely, 2^2144677609 is an apocalyptic number.

It is an amenable number.

2144677609 is a deficient number, since it is larger than the sum of its proper divisors (266907).

2144677609 is an equidigital number, since it uses as much as digits as its factorization.

2144677609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266906.

The product of its (nonzero) digits is 508032, while the sum is 46.

The square root of 2144677609 is about 46310.6640958646. The cubic root of 2144677609 is about 1289.5969754354.

The spelling of 2144677609 in words is "two billion, one hundred forty-four million, six hundred seventy-seven thousand, six hundred nine".