1349273957 has 2 divisors, whose sum is σ = 1349273958. Its totient is φ = 1349273956.

The previous prime is 1349273911. The next prime is 1349273993. The reversal of 1349273957 is 7593729431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1067067556 + 282206401 = 32666^2 + 16799^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1349273957 is a prime.

It is a super-2 number, since 2×1349273957² = 3641080422076875698, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1349273557) 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, 674636978 + 674636979.

It is an arithmetic number, because the mean of its divisors is an integer number (674636979).

Almost surely, 2^1349273957 is an apocalyptic number.

It is an amenable number.

1349273957 is a deficient number, since it is larger than the sum of its proper divisors (1).

1349273957 is an equidigital number, since it uses as much as digits as its factorization.

1349273957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1428840, while the sum is 50.

The square root of 1349273957 is about 36732.4646191894. The cubic root of 1349273957 is about 1105.0112833010.

The spelling of 1349273957 in words is "one billion, three hundred forty-nine million, two hundred seventy-three thousand, nine hundred fifty-seven".