1373317457 has 2 divisors, whose sum is σ = 1373317458. Its totient is φ = 1373317456.

The previous prime is 1373317381. The next prime is 1373317459. The reversal of 1373317457 is 7547133731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1132726336 + 240591121 = 33656^2 + 15511^2 .

It is a cyclic number.

It is not a de Polignac number, because 1373317457 - 2¹⁰ = 1373316433 is a prime.

Together with 1373317459, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1373317459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686658728 + 686658729.

It is an arithmetic number, because the mean of its divisors is an integer number (686658729).

Almost surely, 2^1373317457 is an apocalyptic number.

It is an amenable number.

1373317457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1373317457 is an equidigital number, since it uses as much as digits as its factorization.

1373317457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 185220, while the sum is 41.

The square root of 1373317457 is about 37058.2980855840. The cubic root of 1373317457 is about 1111.5362914095.

The spelling of 1373317457 in words is "one billion, three hundred seventy-three million, three hundred seventeen thousand, four hundred fifty-seven".