4991005903 has 8 divisors (see below), whose sum is σ = 5377187088. Its totient is φ = 4605147264.

The previous prime is 4991005867. The next prime is 4991005907. The reversal of 4991005903 is 3095001994.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4991005903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4991005907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48001 + ... + 110842.

It is an arithmetic number, because the mean of its divisors is an integer number (672148386).

Almost surely, 2^4991005903 is an apocalyptic number.

4991005903 is a deficient number, since it is larger than the sum of its proper divisors (386181185).

4991005903 is a wasteful number, since it uses less digits than its factorization.

4991005903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161273.

The product of its (nonzero) digits is 43740, while the sum is 40.

The square root of 4991005903 is about 70647.0516228384. The cubic root of 4991005903 is about 1708.9500186420.

The spelling of 4991005903 in words is "four billion, nine hundred ninety-one million, five thousand, nine hundred three".