1373729249 has 2 divisors, whose sum is σ = 1373729250. Its totient is φ = 1373729248.

The previous prime is 1373729239. The next prime is 1373729293. The reversal of 1373729249 is 9429273731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 957283600 + 416445649 = 30940^2 + 20407^2 .

It is a cyclic number.

It is not a de Polignac number, because 1373729249 - 2¹² = 1373725153 is a prime.

It is not a weakly prime, because it can be changed into another prime (1373729209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686864624 + 686864625.

It is an arithmetic number, because the mean of its divisors is an integer number (686864625).

Almost surely, 2^1373729249 is an apocalyptic number.

It is an amenable number.

1373729249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1373729249 is an equidigital number, since it uses as much as digits as its factorization.

1373729249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 571536, while the sum is 47.

The square root of 1373729249 is about 37063.8536717379. The cubic root of 1373729249 is about 1111.6473791041.

The spelling of 1373729249 in words is "one billion, three hundred seventy-three million, seven hundred twenty-nine thousand, two hundred forty-nine".