7802485783849 has 9 divisors (see below), whose sum is σ = 7860239459877. Its totient is φ = 7745153445024.

The previous prime is 7802485783837. The next prime is 7802485783853. The reversal of 7802485783849 is 9483875842087.

The square root of 7802485783849 is 2793293.

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

It can be written as a sum of positive squares in 4 ways, for example, as 2953981251225 + 4848504532624 = 1718715^2 + 2201932^2 .

It is not a de Polignac number, because 7802485783849 - 2¹⁹ = 7802485259561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7802485783249) 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, 382670947 + ... + 382691335.

Almost surely, 2^{7802485783849} is an apocalyptic number.

7802485783849 is the 2793293-rd square number.

7802485783849 is the 1396647-th centered octagonal number.

It is an amenable number.

7802485783849 is a deficient number, since it is larger than the sum of its proper divisors (57753676028).

7802485783849 is an frugal number, since it uses more digits than its factorization.

7802485783849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41052 (or 20526 counting only the distinct ones).

The product of its (nonzero) digits is 867041280, while the sum is 73.

The spelling of 7802485783849 in words is "seven trillion, eight hundred two billion, four hundred eighty-five million, seven hundred eighty-three thousand, eight hundred forty-nine".