2144521458 has 24 divisors (see below), whose sum is σ = 4687586748. Its totient is φ = 708513792.

The previous prime is 2144521447. The next prime is 2144521459. The reversal of 2144521458 is 8541254412.

It can be written as a sum of positive squares in 2 ways, for example, as 2013945129 + 130576329 = 44877^2 + 11427^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (2144521459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 525135 + ... + 529202.

Almost surely, 2^2144521458 is an apocalyptic number.

2144521458 is an abundant number, since it is smaller than the sum of its proper divisors (2543065290).

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

2144521458 is a wasteful number, since it uses less digits than its factorization.

2144521458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054458 (or 1054455 counting only the distinct ones).

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

The square root of 2144521458 is about 46308.9781575884. The cubic root of 2144521458 is about 1289.5656767538.

The spelling of 2144521458 in words is "two billion, one hundred forty-four million, five hundred twenty-one thousand, four hundred fifty-eight".