218796849 has 16 divisors (see below), whose sum is σ = 324455040. Its totient is φ = 145724400.

The previous prime is 218796833. The next prime is 218796859. The reversal of 218796849 is 948697812.

It is not a de Polignac number, because 218796849 - 2⁴ = 218796833 is a prime.

It is a super-2 number, since 2×218796849² = 95744122264657602, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 218796795 and 218796804.

It is not an unprimeable number, because it can be changed into a prime (218796829) 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, 30124 + ... + 36674.

It is an arithmetic number, because the mean of its divisors is an integer number (20278440).

Almost surely, 2^218796849 is an apocalyptic number.

It is an amenable number.

218796849 is a deficient number, since it is larger than the sum of its proper divisors (105658191).

218796849 is a wasteful number, since it uses less digits than its factorization.

218796849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7797 (or 7791 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The square root of 218796849 is about 14791.7831582267. The cubic root of 218796849 is about 602.5785773563.

The spelling of 218796849 in words is "two hundred eighteen million, seven hundred ninety-six thousand, eight hundred forty-nine".