1806664853 has 8 divisors (see below), whose sum is σ = 2065017408. Its totient is φ = 1548376704.

The previous prime is 1806664843. The next prime is 1806664859. The reversal of 1806664853 is 3584666081.

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

It is not a de Polignac number, because 1806664853 - 2¹⁰ = 1806663829 is a prime.

It is a super-3 number, since 3×1806664853³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1806664798 and 1806664807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1806664859) 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 7 ways as a sum of consecutive naturals, for example, 96950 + ... + 114072.

It is an arithmetic number, because the mean of its divisors is an integer number (258127176).

Almost surely, 2^1806664853 is an apocalyptic number.

It is an amenable number.

1806664853 is a deficient number, since it is larger than the sum of its proper divisors (258352555).

1806664853 is a wasteful number, since it uses less digits than its factorization.

1806664853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32203.

The product of its (nonzero) digits is 829440, while the sum is 47.

The square root of 1806664853 is about 42504.8803433206. The cubic root of 1806664853 is about 1217.9399195902.

The spelling of 1806664853 in words is "one billion, eight hundred six million, six hundred sixty-four thousand, eight hundred fifty-three".