8208518749 has 2 divisors, whose sum is σ = 8208518750. Its totient is φ = 8208518748.

The previous prime is 8208518671. The next prime is 8208518753. The reversal of 8208518749 is 9478158028.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7003179225 + 1205339524 = 83685^2 + 34718^2 .

It is a cyclic number.

It is not a de Polignac number, because 8208518749 - 2¹⁵ = 8208485981 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8208518696 and 8208518705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8208518249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4104259374 + 4104259375.

It is an arithmetic number, because the mean of its divisors is an integer number (4104259375).

Almost surely, 2^8208518749 is an apocalyptic number.

It is an amenable number.

8208518749 is a deficient number, since it is larger than the sum of its proper divisors (1).

8208518749 is an equidigital number, since it uses as much as digits as its factorization.

8208518749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1290240, while the sum is 52.

The square root of 8208518749 is about 90600.8760939981. The cubic root of 8208518749 is about 2017.2277388318.

The spelling of 8208518749 in words is "eight billion, two hundred eight million, five hundred eighteen thousand, seven hundred forty-nine".