2163512818 has 8 divisors (see below), whose sum is σ = 3270822912. Its totient is φ = 1073238516.

The previous prime is 2163512807. The next prime is 2163512849. The reversal of 2163512818 is 8182153612.

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

It is a super-2 number, since 2×2163512818² = 9361575427300602248, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4258630 + ... + 4259137.

It is an arithmetic number, because the mean of its divisors is an integer number (408852864).

Almost surely, 2^2163512818 is an apocalyptic number.

2163512818 is a deficient number, since it is larger than the sum of its proper divisors (1107310094).

2163512818 is a wasteful number, since it uses less digits than its factorization.

2163512818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8517896.

The product of its digits is 23040, while the sum is 37.

The square root of 2163512818 is about 46513.5767061618. The cubic root of 2163512818 is about 1293.3611879046.

It can be divided in two parts, 21635 and 12818, that added together give a triangular number (34453 = T₂₆₂).

The spelling of 2163512818 in words is "two billion, one hundred sixty-three million, five hundred twelve thousand, eight hundred eighteen".