4378538985 has 8 divisors (see below), whose sum is σ = 7005662400. Its totient is φ = 2335220784.

The previous prime is 4378538977. The next prime is 4378539013. The reversal of 4378538985 is 5898358734.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4378538985 - 2³ = 4378538977 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145951285 + ... + 145951314.

It is an arithmetic number, because the mean of its divisors is an integer number (875707800).

Almost surely, 2^4378538985 is an apocalyptic number.

It is an amenable number.

4378538985 is a deficient number, since it is larger than the sum of its proper divisors (2627123415).

4378538985 is a wasteful number, since it uses less digits than its factorization.

4378538985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291902607.

The product of its digits is 29030400, while the sum is 60.

The square root of 4378538985 is about 66170.5295807733. The cubic root of 4378538985 is about 1635.9740364132.

The spelling of 4378538985 in words is "four billion, three hundred seventy-eight million, five hundred thirty-eight thousand, nine hundred eighty-five".