2218151518 has 16 divisors (see below), whose sum is σ = 3630430080. Its totient is φ = 1008048600.

The previous prime is 2218151497. The next prime is 2218151549. The reversal of 2218151518 is 8151518122.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191743 + ... + 202981.

It is an arithmetic number, because the mean of its divisors is an integer number (226901880).

Almost surely, 2^2218151518 is an apocalyptic number.

2218151518 is a deficient number, since it is larger than the sum of its proper divisors (1412278562).

2218151518 is a wasteful number, since it uses less digits than its factorization.

2218151518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20223.

The product of its digits is 6400, while the sum is 34.

The square root of 2218151518 is about 47097.2559497897. The cubic root of 2218151518 is about 1304.1585799433.

The spelling of 2218151518 in words is "two billion, two hundred eighteen million, one hundred fifty-one thousand, five hundred eighteen".