2218159550 has 12 divisors (see below), whose sum is σ = 4125776856. Its totient is φ = 887263800.

The previous prime is 2218159543. The next prime is 2218159589. The reversal of 2218159550 is 559518122.

It is a happy number.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 22181546 + ... + 22181645.

It is an arithmetic number, because the mean of its divisors is an integer number (343814738).

Almost surely, 2^2218159550 is an apocalyptic number.

2218159550 is a deficient number, since it is larger than the sum of its proper divisors (1907617306).

2218159550 is a wasteful number, since it uses less digits than its factorization.

2218159550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44363203 (or 44363198 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 38.

The square root of 2218159550 is about 47097.3412200731. The cubic root of 2218159550 is about 1304.1601540752.

The spelling of 2218159550 in words is "two billion, two hundred eighteen million, one hundred fifty-nine thousand, five hundred fifty".