1373248501609 has 2 divisors, whose sum is σ = 1373248501610. Its totient is φ = 1373248501608.

The previous prime is 1373248501601. The next prime is 1373248501637. The reversal of 1373248501609 is 9061058423731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1247700170025 + 125548331584 = 1117005^2 + 354328^2 .

It is an emirp because it is prime and its reverse (9061058423731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1373248501609 - 2³ = 1373248501601 is a prime.

It is a super-2 number, since 2×1373248501609² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1373248501601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686624250804 + 686624250805.

It is an arithmetic number, because the mean of its divisors is an integer number (686624250805).

It is a 1-persistent number, because it is pandigital, but 2⋅1373248501609 = 2746497003218 is not.

Almost surely, 2^{1373248501609} is an apocalyptic number.

It is an amenable number.

1373248501609 is a deficient number, since it is larger than the sum of its proper divisors (1).

1373248501609 is an equidigital number, since it uses as much as digits as its factorization.

1373248501609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1088640, while the sum is 49.

The spelling of 1373248501609 in words is "one trillion, three hundred seventy-three billion, two hundred forty-eight million, five hundred one thousand, six hundred nine".