4999071851 has 4 divisors (see below), whose sum is σ = 4999215000. Its totient is φ = 4998928704.

The previous prime is 4999071839. The next prime is 4999071859. The reversal of 4999071851 is 1581709994.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4999071851 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4999071793 and 4999071802.

It is not an unprimeable number, because it can be changed into a prime (4999071859) 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 3 ways as a sum of consecutive naturals, for example, 19100 + ... + 101798.

It is an arithmetic number, because the mean of its divisors is an integer number (1249803750).

Almost surely, 2^4999071851 is an apocalyptic number.

4999071851 is a deficient number, since it is larger than the sum of its proper divisors (143149).

4999071851 is an equidigital number, since it uses as much as digits as its factorization.

4999071851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143148.

The product of its (nonzero) digits is 816480, while the sum is 53.

The square root of 4999071851 is about 70704.1148095357. The cubic root of 4999071851 is about 1709.8701326314.

The spelling of 4999071851 in words is "four billion, nine hundred ninety-nine million, seventy-one thousand, eight hundred fifty-one".