6840529213 has 18 divisors (see below), whose sum is σ = 8003889726. Its totient is φ = 5829216624.

The previous prime is 6840529211. The next prime is 6840529219. The reversal of 6840529213 is 3129250486.

It can be written as a sum of positive squares in only one way, i.e., 6838959204 + 1570009 = 82698^2 + 1253^2 .

It is not a de Polignac number, because 6840529213 - 2¹ = 6840529211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6840529211) 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 17 ways as a sum of consecutive naturals, for example, 1567831 + ... + 1572187.

Almost surely, 2^6840529213 is an apocalyptic number.

It is an amenable number.

6840529213 is a deficient number, since it is larger than the sum of its proper divisors (1163360513).

6840529213 is an equidigital number, since it uses as much as digits as its factorization.

6840529213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4729 (or 4543 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 6840529213 is about 82707.4918795148. The cubic root of 6840529213 is about 1898.2929462594.

Adding to 6840529213 its reverse (3129250486), we get a palindrome (9969779699).

The spelling of 6840529213 in words is "six billion, eight hundred forty million, five hundred twenty-nine thousand, two hundred thirteen".