2218343997 has 8 divisors (see below), whose sum is σ = 3086391744. Its totient is φ = 1414596128.

The previous prime is 2218343987. The next prime is 2218344001. The reversal of 2218343997 is 7993438122.

2218343997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2218343997 - 2¹² = 2218339901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2218343977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16074888 + ... + 16075025.

It is an arithmetic number, because the mean of its divisors is an integer number (385798968).

Almost surely, 2^2218343997 is an apocalyptic number.

It is an amenable number.

2218343997 is a deficient number, since it is larger than the sum of its proper divisors (868047747).

2218343997 is a wasteful number, since it uses less digits than its factorization.

2218343997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32149939.

The product of its digits is 653184, while the sum is 48.

The square root of 2218343997 is about 47099.2993259985. The cubic root of 2218343997 is about 1304.1963014240.

The spelling of 2218343997 in words is "two billion, two hundred eighteen million, three hundred forty-three thousand, nine hundred ninety-seven".