378881959 has 2 divisors, whose sum is σ = 378881960. Its totient is φ = 378881958.

The previous prime is 378881953. The next prime is 378881981. The reversal of 378881959 is 959188873.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 378881959 - 2¹¹ = 378879911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378881953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189440979 + 189440980.

It is an arithmetic number, because the mean of its divisors is an integer number (189440980).

Almost surely, 2^378881959 is an apocalyptic number.

378881959 is a deficient number, since it is larger than the sum of its proper divisors (1).

378881959 is an equidigital number, since it uses as much as digits as its factorization.

378881959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4354560, while the sum is 58.

The square root of 378881959 is about 19464.8904183918. The cubic root of 378881959 is about 723.6045828496.

The spelling of 378881959 in words is "three hundred seventy-eight million, eight hundred eighty-one thousand, nine hundred fifty-nine".