2650849628449 has 9 divisors (see below), whose sum is σ = 2913763492339. Its totient is φ = 2409847017160.

The previous prime is 2650849628429. The next prime is 2650849628489. The reversal of 2650849628449 is 9448269480562.

The square root of 2650849628449 is 1628143.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 339440238225 + 2311409390224 = 582615^2 + 1520332^2 .

It is not a de Polignac number, because 2650849628449 - 2¹³ = 2650849620257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2650849628419) by changing a digit.

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 8 ways as a sum of consecutive naturals, for example, 17835567 + ... + 17983579.

Almost surely, 2^{2650849628449} is an apocalyptic number.

2650849628449 is the 1628143-rd square number.

2650849628449 is the 814072-nd centered octagonal number.

It is an amenable number.

2650849628449 is a deficient number, since it is larger than the sum of its proper divisors (262913863890).

2650849628449 is an frugal number, since it uses more digits than its factorization.

2650849628449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296048 (or 148024 counting only the distinct ones).

The product of its (nonzero) digits is 238878720, while the sum is 67.

The spelling of 2650849628449 in words is "two trillion, six hundred fifty billion, eight hundred forty-nine million, six hundred twenty-eight thousand, four hundred forty-nine".