2018943450 has 144 divisors (see below), whose sum is σ = 5721258816. Its totient is φ = 509414400.

The previous prime is 2018943403. The next prime is 2018943457. The reversal of 2018943450 is 543498102.

2018943450 is a `hidden beast` number, since 20 + 189 + 4 + 3 + 450 = 666.

It is a super-2 number, since 2×2018943450² = 8152265308595805000, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2018943457) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1002945 + ... + 1004955.

It is an arithmetic number, because the mean of its divisors is an integer number (39730964).

Almost surely, 2^2018943450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2018943450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2860629408).

2018943450 is an abundant number, since it is smaller than the sum of its proper divisors (3702315366).

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

2018943450 is a wasteful number, since it uses less digits than its factorization.

2018943450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2149 (or 2141 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 2018943450 is about 44932.6546066444. The cubic root of 2018943450 is about 1263.8864316894.

The spelling of 2018943450 in words is "two billion, eighteen million, nine hundred forty-three thousand, four hundred fifty".