7953187349 has 2 divisors, whose sum is σ = 7953187350. Its totient is φ = 7953187348.

The previous prime is 7953187343. The next prime is 7953187379. The reversal of 7953187349 is 9437813597.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5308142449 + 2645044900 = 72857^2 + 51430^2 .

It is an emirp because it is prime and its reverse (9437813597) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7953187349 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7953187294 and 7953187303.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7953187343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3976593674 + 3976593675.

It is an arithmetic number, because the mean of its divisors is an integer number (3976593675).

Almost surely, 2^7953187349 is an apocalyptic number.

It is an amenable number.

7953187349 is a deficient number, since it is larger than the sum of its proper divisors (1).

7953187349 is an equidigital number, since it uses as much as digits as its factorization.

7953187349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5715360, while the sum is 56.

The square root of 7953187349 is about 89180.6444751326. The cubic root of 7953187349 is about 1996.0913118047.

The spelling of 7953187349 in words is "seven billion, nine hundred fifty-three million, one hundred eighty-seven thousand, three hundred forty-nine".