2090635485409 has 9 divisors (see below), whose sum is σ = 2095643027667. Its totient is φ = 2085639890544.

The previous prime is 2090635485401. The next prime is 2090635485467. The reversal of 2090635485409 is 9045845360902.

The square root of 2090635485409 is 1445903.

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., 12655575009 + 2077979910400 = 112497^2 + 1441520^2 .

It is not a de Polignac number, because 2090635485409 - 2³ = 2090635485401 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2090635485409.

It is not an unprimeable number, because it can be changed into a prime (2090635485401) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 704153277 + ... + 704156245.

Almost surely, 2^{2090635485409} is an apocalyptic number.

2090635485409 is the 1445903-rd square number.

2090635485409 is the 722952-nd centered octagonal number.

It is an amenable number.

2090635485409 is a deficient number, since it is larger than the sum of its proper divisors (5007542258).

2090635485409 is an frugal number, since it uses more digits than its factorization.

2090635485409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6912 (or 3456 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 55.

The spelling of 2090635485409 in words is "two trillion, ninety billion, six hundred thirty-five million, four hundred eighty-five thousand, four hundred nine".