7495221389 has 2 divisors, whose sum is σ = 7495221390. Its totient is φ = 7495221388.

The previous prime is 7495221359. The next prime is 7495221407. The reversal of 7495221389 is 9831225947.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4575440164 + 2919781225 = 67642^2 + 54035^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7495221389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7495221359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3747610694 + 3747610695.

It is an arithmetic number, because the mean of its divisors is an integer number (3747610695).

Almost surely, 2^7495221389 is an apocalyptic number.

It is an amenable number.

7495221389 is a deficient number, since it is larger than the sum of its proper divisors (1).

7495221389 is an equidigital number, since it uses as much as digits as its factorization.

7495221389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 50.

The square root of 7495221389 is about 86574.9466589498. The cubic root of 7495221389 is about 1957.0180071587.

The spelling of 7495221389 in words is "seven billion, four hundred ninety-five million, two hundred twenty-one thousand, three hundred eighty-nine".