7528685849 has 2 divisors, whose sum is σ = 7528685850. Its totient is φ = 7528685848.

The previous prime is 7528685809. The next prime is 7528685851. The reversal of 7528685849 is 9485868257.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7528685824 + 25 = 86768^2 + 5^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7528685849 is a prime.

It is a super-2 number, since 2×7528685849² (a number of 21 digits) contains 22 as substring.

Together with 7528685851, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 7528685791 and 7528685800.

It is not a weakly prime, because it can be changed into another prime (7528685809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3764342924 + 3764342925.

It is an arithmetic number, because the mean of its divisors is an integer number (3764342925).

Almost surely, 2^7528685849 is an apocalyptic number.

It is an amenable number.

7528685849 is a deficient number, since it is larger than the sum of its proper divisors (1).

7528685849 is an equidigital number, since it uses as much as digits as its factorization.

7528685849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38707200, while the sum is 62.

The square root of 7528685849 is about 86768.0001440623. Note that the first 3 decimals coincide. The cubic root of 7528685849 is about 1959.9262301299.

The spelling of 7528685849 in words is "seven billion, five hundred twenty-eight million, six hundred eighty-five thousand, eight hundred forty-nine".