1812085163 has 16 divisors (see below), whose sum is σ = 2093515200. Its totient is φ = 1536377856.

The previous prime is 1812085151. The next prime is 1812085189. The reversal of 1812085163 is 3615802181.

It is a cyclic number.

It is not a de Polignac number, because 1812085163 - 2⁴ = 1812085147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1812085763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 277763 + ... + 284211.

It is an arithmetic number, because the mean of its divisors is an integer number (130844700).

Almost surely, 2^1812085163 is an apocalyptic number.

1812085163 is a deficient number, since it is larger than the sum of its proper divisors (281430037).

1812085163 is a wasteful number, since it uses less digits than its factorization.

1812085163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6886.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 1812085163 is about 42568.5936225288. The cubic root of 1812085163 is about 1219.1567143378.

The spelling of 1812085163 in words is "one billion, eight hundred twelve million, eighty-five thousand, one hundred sixty-three".