4378523789 has 2 divisors, whose sum is σ = 4378523790. Its totient is φ = 4378523788.

The previous prime is 4378523771. The next prime is 4378523801. The reversal of 4378523789 is 9873258734.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4354680100 + 23843689 = 65990^2 + 4883^2 .

It is a cyclic number.

It is not a de Polignac number, because 4378523789 - 2²⁴ = 4361746573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4378523189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2189261894 + 2189261895.

It is an arithmetic number, because the mean of its divisors is an integer number (2189261895).

Almost surely, 2^4378523789 is an apocalyptic number.

It is an amenable number.

4378523789 is a deficient number, since it is larger than the sum of its proper divisors (1).

4378523789 is an equidigital number, since it uses as much as digits as its factorization.

4378523789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10160640, while the sum is 56.

The square root of 4378523789 is about 66170.4147561431. The cubic root of 4378523789 is about 1635.9721438268.

The spelling of 4378523789 in words is "four billion, three hundred seventy-eight million, five hundred twenty-three thousand, seven hundred eighty-nine".