6857018818 has 8 divisors (see below), whose sum is σ = 11076722748. Its totient is φ = 3164777904.

The previous prime is 6857018807. The next prime is 6857018827. The reversal of 6857018818 is 8188107586.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6845411169 + 11607649 = 82737^2 + 3407^2 .

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

It is a super-2 number, since 2×6857018818² = 94037414140812234248, which contains 22 as substring.

It is an unprimeable number.

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, 131865721 + ... + 131865772.

Almost surely, 2^6857018818 is an apocalyptic number.

6857018818 is a deficient number, since it is larger than the sum of its proper divisors (4219703930).

6857018818 is a wasteful number, since it uses less digits than its factorization.

6857018818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263731508.

The product of its (nonzero) digits is 860160, while the sum is 52.

The square root of 6857018818 is about 82807.1181602162. The cubic root of 6857018818 is about 1899.8170477579.

The spelling of 6857018818 in words is "six billion, eight hundred fifty-seven million, eighteen thousand, eight hundred eighteen".