7505491849 has 2 divisors, whose sum is σ = 7505491850. Its totient is φ = 7505491848.

The previous prime is 7505491817. The next prime is 7505491867. The reversal of 7505491849 is 9481945057.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6673746249 + 831745600 = 81693^2 + 28840^2 .

It is a cyclic number.

It is not a de Polignac number, because 7505491849 - 2⁵ = 7505491817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7505491796 and 7505491805.

It is not a weakly prime, because it can be changed into another prime (7505491649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3752745924 + 3752745925.

It is an arithmetic number, because the mean of its divisors is an integer number (3752745925).

Almost surely, 2^7505491849 is an apocalyptic number.

It is an amenable number.

7505491849 is a deficient number, since it is larger than the sum of its proper divisors (1).

7505491849 is an equidigital number, since it uses as much as digits as its factorization.

7505491849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1814400, while the sum is 52.

The square root of 7505491849 is about 86634.2417811803. The cubic root of 7505491849 is about 1957.9114787253.

The spelling of 7505491849 in words is "seven billion, five hundred five million, four hundred ninety-one thousand, eight hundred forty-nine".