2218342937 has 4 divisors (see below), whose sum is σ = 2348833716. Its totient is φ = 2087852160.

The previous prime is 2218342921. The next prime is 2218342949. The reversal of 2218342937 is 7392438122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1589537161 + 628805776 = 39869^2 + 25076^2 .

It is a cyclic number.

It is not a de Polignac number, because 2218342937 - 2⁴ = 2218342921 is a prime.

It is a super-2 number, since 2×2218342937² = 9842090772275571938, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2218342894 and 2218342903.

It is not an unprimeable number, because it can be changed into a prime (2218342837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65245364 + ... + 65245397.

It is an arithmetic number, because the mean of its divisors is an integer number (587208429).

Almost surely, 2^2218342937 is an apocalyptic number.

It is an amenable number.

2218342937 is a deficient number, since it is larger than the sum of its proper divisors (130490779).

2218342937 is a wasteful number, since it uses less digits than its factorization.

2218342937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130490778.

The product of its digits is 145152, while the sum is 41.

The square root of 2218342937 is about 47099.2880731758. The cubic root of 2218342937 is about 1304.1960936942.

The spelling of 2218342937 in words is "two billion, two hundred eighteen million, three hundred forty-two thousand, nine hundred thirty-seven".