4991934385 has 16 divisors (see below), whose sum is σ = 6106250880. Its totient is φ = 3916846080.

The previous prime is 4991934379. The next prime is 4991934407. The reversal of 4991934385 is 5834391994.

It is a happy number.

It is not a de Polignac number, because 4991934385 - 2⁷ = 4991934257 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32086 + ... + 104944.

It is an arithmetic number, because the mean of its divisors is an integer number (381640680).

Almost surely, 2^4991934385 is an apocalyptic number.

It is an amenable number.

4991934385 is a deficient number, since it is larger than the sum of its proper divisors (1114316495).

4991934385 is a wasteful number, since it uses less digits than its factorization.

4991934385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73128.

The product of its digits is 4199040, while the sum is 55.

The square root of 4991934385 is about 70653.6225893620. The cubic root of 4991934385 is about 1709.0559846523.

The spelling of 4991934385 in words is "four billion, nine hundred ninety-one million, nine hundred thirty-four thousand, three hundred eighty-five".