4811856139 has 4 divisors (see below), whose sum is σ = 4815811224. Its totient is φ = 4807901056.

The previous prime is 4811856079. The next prime is 4811856143. The reversal of 4811856139 is 9316581184.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4811856139 - 2²³ = 4803467531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4811856149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1975717 + ... + 1978150.

It is an arithmetic number, because the mean of its divisors is an integer number (1203952806).

Almost surely, 2^4811856139 is an apocalyptic number.

4811856139 is a deficient number, since it is larger than the sum of its proper divisors (3955085).

4811856139 is a wasteful number, since it uses less digits than its factorization.

4811856139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3955084.

The product of its digits is 207360, while the sum is 46.

The square root of 4811856139 is about 69367.5438443657. The cubic root of 4811856139 is about 1688.2530573932.

The spelling of 4811856139 in words is "four billion, eight hundred eleven million, eight hundred fifty-six thousand, one hundred thirty-nine".