378780229 has 2 divisors, whose sum is σ = 378780230. Its totient is φ = 378780228.

The previous prime is 378780161. The next prime is 378780251. The reversal of 378780229 is 922087873.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 324360100 + 54420129 = 18010^2 + 7377^2 .

It is a cyclic number.

It is not a de Polignac number, because 378780229 - 2²³ = 370391621 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378780299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189390114 + 189390115.

It is an arithmetic number, because the mean of its divisors is an integer number (189390115).

Almost surely, 2^378780229 is an apocalyptic number.

It is an amenable number.

378780229 is a deficient number, since it is larger than the sum of its proper divisors (1).

378780229 is an equidigital number, since it uses as much as digits as its factorization.

378780229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 338688, while the sum is 46.

The square root of 378780229 is about 19462.2770764369. The cubic root of 378780229 is about 723.5398143188.

The spelling of 378780229 in words is "three hundred seventy-eight million, seven hundred eighty thousand, two hundred twenty-nine".