6857920983 has 4 divisors (see below), whose sum is σ = 9143894648. Its totient is φ = 4571947320.

The previous prime is 6857920973. The next prime is 6857920987. The reversal of 6857920983 is 3890297586.

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

It is a de Polignac number, because none of the positive numbers 2^k-6857920983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6857920987) 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, 1142986828 + ... + 1142986833.

It is an arithmetic number, because the mean of its divisors is an integer number (2285973662).

Almost surely, 2^6857920983 is an apocalyptic number.

6857920983 is a deficient number, since it is larger than the sum of its proper divisors (2285973665).

6857920983 is a wasteful number, since it uses less digits than its factorization.

6857920983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2285973664.

The product of its (nonzero) digits is 6531840, while the sum is 57.

The square root of 6857920983 is about 82812.5653690308. The cubic root of 6857920983 is about 1899.9003625497.

The spelling of 6857920983 in words is "six billion, eight hundred fifty-seven million, nine hundred twenty thousand, nine hundred eighty-three".