1373397673 has 2 divisors, whose sum is σ = 1373397674. Its totient is φ = 1373397672.

The previous prime is 1373397671. The next prime is 1373397677. The reversal of 1373397673 is 3767933731.

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., 935625744 + 437771929 = 30588^2 + 20923^2 .

It is an emirp because it is prime and its reverse (3767933731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1373397673 - 2¹ = 1373397671 is a prime.

Together with 1373397671, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1373397671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686698836 + 686698837.

It is an arithmetic number, because the mean of its divisors is an integer number (686698837).

Almost surely, 2^1373397673 is an apocalyptic number.

It is an amenable number.

1373397673 is a deficient number, since it is larger than the sum of its proper divisors (1).

1373397673 is an equidigital number, since it uses as much as digits as its factorization.

1373397673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1500282, while the sum is 49.

The square root of 1373397673 is about 37059.3803644907. The cubic root of 1373397673 is about 1111.5579327420.

The spelling of 1373397673 in words is "one billion, three hundred seventy-three million, three hundred ninety-seven thousand, six hundred seventy-three".