375668009 has 2 divisors, whose sum is σ = 375668010. Its totient is φ = 375668008.

The previous prime is 375667969. The next prime is 375668017. The reversal of 375668009 is 900866573.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 313998400 + 61669609 = 17720^2 + 7853^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-375668009 is a prime.

It is a super-2 number, since 2×375668009² = 282252905972048162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (375668309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 187834004 + 187834005.

It is an arithmetic number, because the mean of its divisors is an integer number (187834005).

Almost surely, 2^375668009 is an apocalyptic number.

It is an amenable number.

375668009 is a deficient number, since it is larger than the sum of its proper divisors (1).

375668009 is an equidigital number, since it uses as much as digits as its factorization.

375668009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 375668009 is about 19382.1569749086. The cubic root of 375668009 is about 721.5527247912.

The spelling of 375668009 in words is "three hundred seventy-five million, six hundred sixty-eight thousand, nine".