1812163063 has 8 divisors (see below), whose sum is σ = 1881438336. Its totient is φ = 1743564000.

The previous prime is 1812163043. The next prime is 1812163139. The reversal of 1812163063 is 3603612181.

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

It is a de Polignac number, because none of the positive numbers 2^k-1812163063 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1812163043) 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, 163588 + ... + 174313.

It is an arithmetic number, because the mean of its divisors is an integer number (235179792).

Almost surely, 2^1812163063 is an apocalyptic number.

1812163063 is a deficient number, since it is larger than the sum of its proper divisors (69275273).

1812163063 is a wasteful number, since it uses less digits than its factorization.

1812163063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338105.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 1812163063 is about 42569.5086065132. The cubic root of 1812163063 is about 1219.1741842576.

The spelling of 1812163063 in words is "one billion, eight hundred twelve million, one hundred sixty-three thousand, sixty-three".