2215518885 has 40 divisors (see below), whose sum is σ = 4063915680. Its totient is φ = 1154121696.

The previous prime is 2215518869. The next prime is 2215518901. The reversal of 2215518885 is 5888155122.

It is an interprime number because it is at equal distance from previous prime (2215518869) and next prime (2215518901).

It is not a de Polignac number, because 2215518885 - 2⁴ = 2215518869 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 2215518885.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 46195 + ... + 81024.

It is an arithmetic number, because the mean of its divisors is an integer number (101597892).

Almost surely, 2^2215518885 is an apocalyptic number.

It is an amenable number.

2215518885 is a deficient number, since it is larger than the sum of its proper divisors (1848396795).

2215518885 is a wasteful number, since it uses less digits than its factorization.

2215518885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127279 (or 127270 counting only the distinct ones).

The product of its digits is 256000, while the sum is 45.

The square root of 2215518885 is about 47069.2987519466. The cubic root of 2215518885 is about 1303.6424249238.

The spelling of 2215518885 in words is "two billion, two hundred fifteen million, five hundred eighteen thousand, eight hundred eighty-five".