2218366951 has 24 divisors (see below), whose sum is σ = 2393288352. Its totient is φ = 2052230400.

The previous prime is 2218366949. The next prime is 2218366963. The reversal of 2218366951 is 1596638122.

It is not a de Polignac number, because 2218366951 - 2¹ = 2218366949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2218366898 and 2218366907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2218366921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6997845 + ... + 6998161.

It is an arithmetic number, because the mean of its divisors is an integer number (99720348).

Almost surely, 2^2218366951 is an apocalyptic number.

2218366951 is a deficient number, since it is larger than the sum of its proper divisors (174921401).

2218366951 is a wasteful number, since it uses less digits than its factorization.

2218366951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603 (or 562 counting only the distinct ones).

The product of its digits is 155520, while the sum is 43.

The square root of 2218366951 is about 47099.5430020292. The cubic root of 2218366951 is about 1304.2007997372.

The spelling of 2218366951 in words is "two billion, two hundred eighteen million, three hundred sixty-six thousand, nine hundred fifty-one".