2125443018 has 128 divisors (see below), whose sum is σ = 4895539200. Its totient is φ = 611582400.

The previous prime is 2125443017. The next prime is 2125443029. The reversal of 2125443018 is 8103445212.

It is not an unprimeable number, because it can be changed into a prime (2125443017) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6421113 + ... + 6421443.

It is an arithmetic number, because the mean of its divisors is an integer number (38246400).

Almost surely, 2^2125443018 is an apocalyptic number.

2125443018 is an abundant number, since it is smaller than the sum of its proper divisors (2770096182).

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

2125443018 is a wasteful number, since it uses less digits than its factorization.

2125443018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488.

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 2125443018 is about 46102.5272409225. The cubic root of 2125443018 is about 1285.7301321821.

The spelling of 2125443018 in words is "two billion, one hundred twenty-five million, four hundred forty-three thousand, eighteen".