378659273 has 2 divisors, whose sum is σ = 378659274. Its totient is φ = 378659272.

The previous prime is 378659261. The next prime is 378659287. The reversal of 378659273 is 372956873.

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., 371217289 + 7441984 = 19267^2 + 2728^2 .

It is a cyclic number.

It is not a de Polignac number, because 378659273 - 2⁴ = 378659257 is a prime.

It is not a weakly prime, because it can be changed into another prime (378659233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189329636 + 189329637.

It is an arithmetic number, because the mean of its divisors is an integer number (189329637).

Almost surely, 2^378659273 is an apocalyptic number.

It is an amenable number.

378659273 is a deficient number, since it is larger than the sum of its proper divisors (1).

378659273 is an equidigital number, since it uses as much as digits as its factorization.

378659273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1905120, while the sum is 50.

The square root of 378659273 is about 19459.1693810399. The cubic root of 378659273 is about 723.4627900602.

The spelling of 378659273 in words is "three hundred seventy-eight million, six hundred fifty-nine thousand, two hundred seventy-three".