5635671837849 has 45 divisors (see below), whose sum is σ = 8653616023437. Its totient is φ = 3655058147136.

The previous prime is 5635671837823. The next prime is 5635671837857. The reversal of 5635671837849 is 9487381765365.

It is a happy number.

The square root of 5635671837849 is 2373957.

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

5635671837849 is a `hidden beast` number, since 5 + 6 + 3 + 567 + 18 + 3 + 7 + 8 + 49 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1741885238025 + 3893786599824 = 1319805^2 + 1973268^2 .

It is not a de Polignac number, because 5635671837849 - 2¹⁵ = 5635671805081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5635671837949) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 790524117 + ... + 790531245.

Almost surely, 2^{5635671837849} is an apocalyptic number.

5635671837849 is the 2373957-th square number.

5635671837849 is the 1186979-th centered octagonal number.

It is an amenable number.

5635671837849 is a deficient number, since it is larger than the sum of its proper divisors (3017944185588).

5635671837849 is an frugal number, since it uses more digits than its factorization.

5635671837849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14344 (or 7169 counting only the distinct ones).

The product of its digits is 914457600, while the sum is 72.

The spelling of 5635671837849 in words is "five trillion, six hundred thirty-five billion, six hundred seventy-one million, eight hundred thirty-seven thousand, eight hundred forty-nine".