6450851818 has 8 divisors (see below), whose sum is σ = 9683053380. Its totient is φ = 3223167360.

The previous prime is 6450851801. The next prime is 6450851821. The reversal of 6450851818 is 8181580546.

It can be written as a sum of positive squares in 2 ways, for example, as 6450820489 + 31329 = 80317^2 + 177^2 .

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

It is a super-2 number, since 2×6450851818² = 83226978355587810248, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1125703 + ... + 1131418.

Almost surely, 2^6450851818 is an apocalyptic number.

6450851818 is a deficient number, since it is larger than the sum of its proper divisors (3232201562).

6450851818 is a wasteful number, since it uses less digits than its factorization.

6450851818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2258552.

The product of its (nonzero) digits is 307200, while the sum is 46.

The square root of 6450851818 is about 80317.1950331932. The cubic root of 6450851818 is about 1861.5399258195.

The spelling of 6450851818 in words is "six billion, four hundred fifty million, eight hundred fifty-one thousand, eight hundred eighteen".