1375112009 has 2 divisors, whose sum is σ = 1375112010. Its totient is φ = 1375112008.

The previous prime is 1375112003. The next prime is 1375112047. The reversal of 1375112009 is 9002115731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1183566409 + 191545600 = 34403^2 + 13840^2 .

It is a cyclic number.

It is not a de Polignac number, because 1375112009 - 2⁸ = 1375111753 is a prime.

It is not a weakly prime, because it can be changed into another prime (1375112003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 687556004 + 687556005.

It is an arithmetic number, because the mean of its divisors is an integer number (687556005).

Almost surely, 2^1375112009 is an apocalyptic number.

It is an amenable number.

1375112009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1375112009 is an equidigital number, since it uses as much as digits as its factorization.

1375112009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1890, while the sum is 29.

The square root of 1375112009 is about 37082.5027337692. The cubic root of 1375112009 is about 1112.0202391055.

The spelling of 1375112009 in words is "one billion, three hundred seventy-five million, one hundred twelve thousand, nine".