4378071889 has 9 divisors (see below), whose sum is σ = 4421302491. Its totient is φ = 4335261840.

The previous prime is 4378071883. The next prime is 4378071899. The reversal of 4378071889 is 9881708734.

It is a happy number.

The square root of 4378071889 is 66167.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1255497489 + 3122574400 = 35433^2 + 55880^2 .

It is not a de Polignac number, because 4378071889 - 2⁹ = 4378071377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4378071883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 8402949 + ... + 8403469.

Almost surely, 2^4378071889 is an apocalyptic number.

4378071889 is the 66167-th square number.

4378071889 is the 33084-th centered octagonal number.

It is an amenable number.

4378071889 is a deficient number, since it is larger than the sum of its proper divisors (43230602).

4378071889 is an frugal number, since it uses more digits than its factorization.

4378071889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296 (or 648 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 55.

The cubic root of 4378071889 is about 1635.9158599221.

The spelling of 4378071889 in words is "four billion, three hundred seventy-eight million, seventy-one thousand, eight hundred eighty-nine".