7145201309 has 2 divisors, whose sum is σ = 7145201310. Its totient is φ = 7145201308.

The previous prime is 7145201299. The next prime is 7145201317. The reversal of 7145201309 is 9031025417.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6777405625 + 367795684 = 82325^2 + 19178^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7145201309 is a prime.

It is a super-2 number, since 2×7145201309² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7145201359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3572600654 + 3572600655.

It is an arithmetic number, because the mean of its divisors is an integer number (3572600655).

Almost surely, 2^7145201309 is an apocalyptic number.

It is an amenable number.

7145201309 is a deficient number, since it is larger than the sum of its proper divisors (1).

7145201309 is an equidigital number, since it uses as much as digits as its factorization.

7145201309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 7145201309 is about 84529.2926091305. The cubic root of 7145201309 is about 1926.0674404974.

The spelling of 7145201309 in words is "seven billion, one hundred forty-five million, two hundred one thousand, three hundred nine".