8511921049 has 2 divisors, whose sum is σ = 8511921050. Its totient is φ = 8511921048.

The previous prime is 8511921023. The next prime is 8511921101. The reversal of 8511921049 is 9401291158.

8511921049 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8497152400 + 14768649 = 92180^2 + 3843^2 .

It is a cyclic number.

It is not a de Polignac number, because 8511921049 - 2¹¹ = 8511919001 is a prime.

It is a super-3 number, since 3×8511921049³ (a number of 31 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (8511921149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4255960524 + 4255960525.

It is an arithmetic number, because the mean of its divisors is an integer number (4255960525).

Almost surely, 2^8511921049 is an apocalyptic number.

It is an amenable number.

8511921049 is a deficient number, since it is larger than the sum of its proper divisors (1).

8511921049 is an equidigital number, since it uses as much as digits as its factorization.

8511921049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 40.

The square root of 8511921049 is about 92260.0728863792. The cubic root of 8511921049 is about 2041.7811760788.

The spelling of 8511921049 in words is "eight billion, five hundred eleven million, nine hundred twenty-one thousand, forty-nine".