1373954009 has 2 divisors, whose sum is σ = 1373954010. Its totient is φ = 1373954008.

The previous prime is 1373953981. The next prime is 1373954039. The reversal of 1373954009 is 9004593731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1166017609 + 207936400 = 34147^2 + 14420^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1373954009 is a prime.

It is not a weakly prime, because it can be changed into another prime (1373954039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686977004 + 686977005.

It is an arithmetic number, because the mean of its divisors is an integer number (686977005).

Almost surely, 2^1373954009 is an apocalyptic number.

It is an amenable number.

1373954009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1373954009 is an equidigital number, since it uses as much as digits as its factorization.

1373954009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 102060, while the sum is 41.

The square root of 1373954009 is about 37066.8856123630. The cubic root of 1373954009 is about 1111.7080024620.

The spelling of 1373954009 in words is "one billion, three hundred seventy-three million, nine hundred fifty-four thousand, nine".