2044486657 has 8 divisors (see below), whose sum is σ = 2173178376. Its totient is φ = 1916731392.

The previous prime is 2044486649. The next prime is 2044486667. The reversal of 2044486657 is 7566844402.

It is a happy number.

It is a Cunningham number, because it is equal to 45216²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1364268096 + 680218561 = 36936^2 + 26081^2 .

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 2044486657 - 2³ = 2044486649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2044486637) 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, 229608 + ... + 238345.

It is an arithmetic number, because the mean of its divisors is an integer number (271647297).

Almost surely, 2^2044486657 is an apocalyptic number.

It is an amenable number.

2044486657 is a deficient number, since it is larger than the sum of its proper divisors (128691719).

2044486657 is a wasteful number, since it uses less digits than its factorization.

2044486657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468227.

The product of its (nonzero) digits is 1290240, while the sum is 46.

The square root of 2044486657 is about 45216.0000110580. Note that the first 4 decimals coincide. The cubic root of 2044486657 is about 1269.1942430617.

The spelling of 2044486657 in words is "two billion, forty-four million, four hundred eighty-six thousand, six hundred fifty-seven".