213832865818 has 32 divisors (see below), whose sum is σ = 376895840832. Its totient is φ = 89703062400.

The previous prime is 213832865767. The next prime is 213832865849. The reversal of 213832865818 is 818568238312.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1499958 + ... + 1636318.

It is an arithmetic number, because the mean of its divisors is an integer number (11777995026).

Almost surely, 2^213832865818 is an apocalyptic number.

213832865818 is a deficient number, since it is larger than the sum of its proper divisors (163062975014).

213832865818 is a wasteful number, since it uses less digits than its factorization.

213832865818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141870.

The product of its digits is 4423680, while the sum is 55.

The spelling of 213832865818 in words is "two hundred thirteen billion, eight hundred thirty-two million, eight hundred sixty-five thousand, eight hundred eighteen".