7651959449 has 2 divisors, whose sum is σ = 7651959450. Its totient is φ = 7651959448.

The previous prime is 7651959421. The next prime is 7651959451. The reversal of 7651959449 is 9449591567.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7547265625 + 104693824 = 86875^2 + 10232^2 .

It is a cyclic number.

It is not a de Polignac number, because 7651959449 - 2¹⁶ = 7651893913 is a prime.

Together with 7651959451, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7651959149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3825979724 + 3825979725.

It is an arithmetic number, because the mean of its divisors is an integer number (3825979725).

Almost surely, 2^7651959449 is an apocalyptic number.

It is an amenable number.

7651959449 is a deficient number, since it is larger than the sum of its proper divisors (1).

7651959449 is an equidigital number, since it uses as much as digits as its factorization.

7651959449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12247200, while the sum is 59.

The square root of 7651959449 is about 87475.4791298682. The cubic root of 7651959449 is about 1970.5655525357.

The spelling of 7651959449 in words is "seven billion, six hundred fifty-one million, nine hundred fifty-nine thousand, four hundred forty-nine".