1315177349 has 2 divisors, whose sum is σ = 1315177350. Its totient is φ = 1315177348.

The previous prime is 1315177343. The next prime is 1315177373. The reversal of 1315177349 is 9437715131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1309933249 + 5244100 = 36193^2 + 2290^2 .

It is a cyclic number.

It is not a de Polignac number, because 1315177349 - 2⁴ = 1315177333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1315177343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657588674 + 657588675.

It is an arithmetic number, because the mean of its divisors is an integer number (657588675).

Almost surely, 2^1315177349 is an apocalyptic number.

It is an amenable number.

1315177349 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315177349 is an equidigital number, since it uses as much as digits as its factorization.

1315177349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 79380, while the sum is 41.

The square root of 1315177349 is about 36265.3739674638. The cubic root of 1315177349 is about 1095.6237555956.

The spelling of 1315177349 in words is "one billion, three hundred fifteen million, one hundred seventy-seven thousand, three hundred forty-nine".