2689171449 has 16 divisors (see below), whose sum is σ = 3625043520. Its totient is φ = 1773066240.

The previous prime is 2689171447. The next prime is 2689171489. The reversal of 2689171449 is 9441719862.

It is not a de Polignac number, because 2689171449 - 2¹ = 2689171447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2689171447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 631969 + ... + 636209.

It is an arithmetic number, because the mean of its divisors is an integer number (226565220).

Almost surely, 2^2689171449 is an apocalyptic number.

It is an amenable number.

2689171449 is a deficient number, since it is larger than the sum of its proper divisors (935872071).

2689171449 is a wasteful number, since it uses less digits than its factorization.

2689171449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6520.

The product of its digits is 870912, while the sum is 51.

The square root of 2689171449 is about 51857.2217632221. The cubic root of 2689171449 is about 1390.6126121484.

The spelling of 2689171449 in words is "two billion, six hundred eighty-nine million, one hundred seventy-one thousand, four hundred forty-nine".