2218545144 has 48 divisors (see below), whose sum is σ = 6021517320. Its totient is φ = 737920320.

The previous prime is 2218545113. The next prime is 2218545151. The reversal of 2218545144 is 4415458122.

2218545144 is a `hidden beast` number, since 22 + 185 + 451 + 4 + 4 = 666.

2218545144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2218545099 and 2218545108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 634 + ... + 66614.

Almost surely, 2^2218545144 is an apocalyptic number.

2218545144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2218545144 is an abundant number, since it is smaller than the sum of its proper divisors (3802972176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2218545144 is a wasteful number, since it uses less digits than its factorization.

2218545144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66460 (or 66453 counting only the distinct ones).

The product of its digits is 51200, while the sum is 36.

The square root of 2218545144 is about 47101.4346278327. The cubic root of 2218545144 is about 1304.2357193028.

The spelling of 2218545144 in words is "two billion, two hundred eighteen million, five hundred forty-five thousand, one hundred forty-four".