8019109249 has 2 divisors, whose sum is σ = 8019109250. Its totient is φ = 8019109248.

The previous prime is 8019109211. The next prime is 8019109289. The reversal of 8019109249 is 9429019108.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5121978624 + 2897130625 = 71568^2 + 53825^2 .

It is a cyclic number.

It is not a de Polignac number, because 8019109249 - 2²⁵ = 7985554817 is a prime.

It is a super-2 number, since 2×8019109249² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8019109289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4009554624 + 4009554625.

It is an arithmetic number, because the mean of its divisors is an integer number (4009554625).

Almost surely, 2^8019109249 is an apocalyptic number.

It is an amenable number.

8019109249 is a deficient number, since it is larger than the sum of its proper divisors (1).

8019109249 is an equidigital number, since it uses as much as digits as its factorization.

8019109249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 43.

The square root of 8019109249 is about 89549.4793340531. The cubic root of 8019109249 is about 2001.5911711681.

The spelling of 8019109249 in words is "eight billion, nineteen million, one hundred nine thousand, two hundred forty-nine".