1372747009 has 2 divisors, whose sum is σ = 1372747010. Its totient is φ = 1372747008.

The previous prime is 1372747003. The next prime is 1372747049. The reversal of 1372747009 is 9007472731.

It is an a-pointer prime, because the next prime (1372747049) can be obtained adding 1372747009 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1017801409 + 354945600 = 31903^2 + 18840^2 .

It is an emirp because it is prime and its reverse (9007472731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1372747009 - 2⁹ = 1372746497 is a prime.

It is not a weakly prime, because it can be changed into another prime (1372747003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686373504 + 686373505.

It is an arithmetic number, because the mean of its divisors is an integer number (686373505).

Almost surely, 2^1372747009 is an apocalyptic number.

It is an amenable number.

1372747009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1372747009 is an equidigital number, since it uses as much as digits as its factorization.

1372747009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 74088, while the sum is 40.

The square root of 1372747009 is about 37050.6006563996. The cubic root of 1372747009 is about 1111.3823669436.

The spelling of 1372747009 in words is "one billion, three hundred seventy-two million, seven hundred forty-seven thousand, nine".