2689486144 has 14 divisors (see below), whose sum is σ = 5336949194. Its totient is φ = 1344743040.

The previous prime is 2689486141. The next prime is 2689486153. The reversal of 2689486144 is 4416849862.

It can be written as a sum of positive squares in only one way, i.e., 2653486144 + 36000000 = 51512^2 + 6000^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2689486091 and 2689486100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2689486141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21011547 + ... + 21011674.

Almost surely, 2^2689486144 is an apocalyptic number.

It is an amenable number.

2689486144 is a deficient number, since it is larger than the sum of its proper divisors (2647463050).

2689486144 is an equidigital number, since it uses as much as digits as its factorization.

2689486144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42023233 (or 42023223 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 52.

The square root of 2689486144 is about 51860.2559191526. The cubic root of 2689486144 is about 1390.6668546012. Note that the first 3 decimals are identical.

The spelling of 2689486144 in words is "two billion, six hundred eighty-nine million, four hundred eighty-six thousand, one hundred forty-four".