836944520849 has 2 divisors, whose sum is σ = 836944520850. Its totient is φ = 836944520848.

The previous prime is 836944520831. The next prime is 836944520891. The reversal of 836944520849 is 948025449638.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 831625444225 + 5319076624 = 911935^2 + 72932^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-836944520849 is a prime.

It is a super-2 number, since 2×836944520849² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 836944520791 and 836944520800.

It is not a weakly prime, because it can be changed into another prime (836944520249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 418472260424 + 418472260425.

It is an arithmetic number, because the mean of its divisors is an integer number (418472260425).

Almost surely, 2^836944520849 is an apocalyptic number.

It is an amenable number.

836944520849 is a deficient number, since it is larger than the sum of its proper divisors (1).

836944520849 is an equidigital number, since it uses as much as digits as its factorization.

836944520849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 59719680, while the sum is 62.

The spelling of 836944520849 in words is "eight hundred thirty-six billion, nine hundred forty-four million, five hundred twenty thousand, eight hundred forty-nine".