378174649 has 2 divisors, whose sum is σ = 378174650. Its totient is φ = 378174648.

The previous prime is 378174619. The next prime is 378174653. The reversal of 378174649 is 946471873.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 378030249 + 144400 = 19443^2 + 380^2 .

It is a cyclic number.

It is not a de Polignac number, because 378174649 - 2¹⁷ = 378043577 is a prime.

It is not a weakly prime, because it can be changed into another prime (378174619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189087324 + 189087325.

It is an arithmetic number, because the mean of its divisors is an integer number (189087325).

Almost surely, 2^378174649 is an apocalyptic number.

It is an amenable number.

378174649 is a deficient number, since it is larger than the sum of its proper divisors (1).

378174649 is an equidigital number, since it uses as much as digits as its factorization.

378174649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1016064, while the sum is 49.

The square root of 378174649 is about 19446.7130641659. The cubic root of 378174649 is about 723.1540189682.

The spelling of 378174649 in words is "three hundred seventy-eight million, one hundred seventy-four thousand, six hundred forty-nine".