376945609 has 2 divisors, whose sum is σ = 376945610. Its totient is φ = 376945608.

The previous prime is 376945561. The next prime is 376945637. The reversal of 376945609 is 906549673.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 237776400 + 139169209 = 15420^2 + 11797^2 .

It is an emirp because it is prime and its reverse (906549673) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 376945609 - 2¹¹ = 376943561 is a prime.

It is not a weakly prime, because it can be changed into another prime (376945649) 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, 188472804 + 188472805.

It is an arithmetic number, because the mean of its divisors is an integer number (188472805).

Almost surely, 2^376945609 is an apocalyptic number.

It is an amenable number.

376945609 is a deficient number, since it is larger than the sum of its proper divisors (1).

376945609 is an equidigital number, since it uses as much as digits as its factorization.

376945609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1224720, while the sum is 49.

The square root of 376945609 is about 19415.0871489159. The cubic root of 376945609 is about 722.3697695136.

The spelling of 376945609 in words is "three hundred seventy-six million, nine hundred forty-five thousand, six hundred nine".