378074689 has 2 divisors, whose sum is σ = 378074690. Its totient is φ = 378074688.

The previous prime is 378074681. The next prime is 378074701. The reversal of 378074689 is 986470873.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 376670464 + 1404225 = 19408^2 + 1185^2 .

It is a cyclic number.

It is not a de Polignac number, because 378074689 - 2³ = 378074681 is a prime.

It is not a weakly prime, because it can be changed into another prime (378074681) 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, 189037344 + 189037345.

It is an arithmetic number, because the mean of its divisors is an integer number (189037345).

Almost surely, 2^378074689 is an apocalyptic number.

It is an amenable number.

378074689 is a deficient number, since it is larger than the sum of its proper divisors (1).

378074689 is an equidigital number, since it uses as much as digits as its factorization.

378074689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2032128, while the sum is 52.

The square root of 378074689 is about 19444.1427941681. The cubic root of 378074689 is about 723.0902981046.

The spelling of 378074689 in words is "three hundred seventy-eight million, seventy-four thousand, six hundred eighty-nine".