1349156773 has 2 divisors, whose sum is σ = 1349156774. Its totient is φ = 1349156772.

The previous prime is 1349156749. The next prime is 1349156803. The reversal of 1349156773 is 3776519431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 813789729 + 535367044 = 28527^2 + 23138^2 .

It is a cyclic number.

It is not a de Polignac number, because 1349156773 - 2⁵ = 1349156741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1349156713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 674578386 + 674578387.

It is an arithmetic number, because the mean of its divisors is an integer number (674578387).

Almost surely, 2^1349156773 is an apocalyptic number.

It is an amenable number.

1349156773 is a deficient number, since it is larger than the sum of its proper divisors (1).

1349156773 is an equidigital number, since it uses as much as digits as its factorization.

1349156773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 476280, while the sum is 46.

The square root of 1349156773 is about 36730.8694833106. The cubic root of 1349156773 is about 1104.9792924192.

The spelling of 1349156773 in words is "one billion, three hundred forty-nine million, one hundred fifty-six thousand, seven hundred seventy-three".