2144457605 has 8 divisors (see below), whose sum is σ = 2724722712. Its totient is φ = 1614650368.

The previous prime is 2144457593. The next prime is 2144457641. The reversal of 2144457605 is 5067544412.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 855504001 + 1288953604 = 29249^2 + 35902^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2144457605 - 2⁴ = 2144457589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 12614372 + ... + 12614541.

It is an arithmetic number, because the mean of its divisors is an integer number (340590339).

Almost surely, 2^2144457605 is an apocalyptic number.

It is an amenable number.

2144457605 is a deficient number, since it is larger than the sum of its proper divisors (580265107).

2144457605 is a wasteful number, since it uses less digits than its factorization.

2144457605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25228935.

The product of its (nonzero) digits is 134400, while the sum is 38.

The square root of 2144457605 is about 46308.2887289090. The cubic root of 2144457605 is about 1289.5528777128.

The spelling of 2144457605 in words is "two billion, one hundred forty-four million, four hundred fifty-seven thousand, six hundred five".