378268729 has 2 divisors, whose sum is σ = 378268730. Its totient is φ = 378268728.

The previous prime is 378268697. The next prime is 378268757. The reversal of 378268729 is 927862873.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 309760000 + 68508729 = 17600^2 + 8277^2 .

It is a cyclic number.

It is not a de Polignac number, because 378268729 - 2⁵ = 378268697 is a prime.

It is not a weakly prime, because it can be changed into another prime (378268769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189134364 + 189134365.

It is an arithmetic number, because the mean of its divisors is an integer number (189134365).

Almost surely, 2^378268729 is an apocalyptic number.

It is an amenable number.

378268729 is a deficient number, since it is larger than the sum of its proper divisors (1).

378268729 is an equidigital number, since it uses as much as digits as its factorization.

378268729 is an evil number, because the sum of its binary digits is even.

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

The square root of 378268729 is about 19449.1318315240. The cubic root of 378268729 is about 723.2139812893.

The spelling of 378268729 in words is "three hundred seventy-eight million, two hundred sixty-eight thousand, seven hundred twenty-nine".