8004951649 has 2 divisors, whose sum is σ = 8004951650. Its totient is φ = 8004951648.

The previous prime is 8004951629. The next prime is 8004951727. The reversal of 8004951649 is 9461594008.

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., 5095104400 + 2909847249 = 71380^2 + 53943^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8004951649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8004951599 and 8004951608.

It is not a weakly prime, because it can be changed into another prime (8004951629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4002475824 + 4002475825.

It is an arithmetic number, because the mean of its divisors is an integer number (4002475825).

Almost surely, 2^8004951649 is an apocalyptic number.

It is an amenable number.

8004951649 is a deficient number, since it is larger than the sum of its proper divisors (1).

8004951649 is an equidigital number, since it uses as much as digits as its factorization.

8004951649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 8004951649 is about 89470.3953774655. The cubic root of 8004951649 is about 2000.4125523111.

The spelling of 8004951649 in words is "eight billion, four million, nine hundred fifty-one thousand, six hundred forty-nine".