1310197949 has 2 divisors, whose sum is σ = 1310197950. Its totient is φ = 1310197948.

The previous prime is 1310197943. The next prime is 1310197979. The reversal of 1310197949 is 9497910131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1190733049 + 119464900 = 34507^2 + 10930^2 .

It is an emirp because it is prime and its reverse (9497910131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1310197949 - 2¹⁶ = 1310132413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1310197943) 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, 655098974 + 655098975.

It is an arithmetic number, because the mean of its divisors is an integer number (655098975).

Almost surely, 2^1310197949 is an apocalyptic number.

It is an amenable number.

1310197949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1310197949 is an equidigital number, since it uses as much as digits as its factorization.

1310197949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61236, while the sum is 44.

The square root of 1310197949 is about 36196.6565997469. The cubic root of 1310197949 is about 1094.2392912251.

The spelling of 1310197949 in words is "one billion, three hundred ten million, one hundred ninety-seven thousand, nine hundred forty-nine".