2152440493 has 6 divisors (see below), whose sum is σ = 2503859406. Its totient is φ = 1844948952.

The previous prime is 2152440491. The next prime is 2152440527. The reversal of 2152440493 is 3940442512.

It can be written as a sum of positive squares in only one way, i.e., 2122168489 + 30272004 = 46067^2 + 5502^2 .

It is not a de Polignac number, because 2152440493 - 2¹ = 2152440491 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2152440491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21963630 + ... + 21963727.

It is an arithmetic number, because the mean of its divisors is an integer number (417309901).

Almost surely, 2^2152440493 is an apocalyptic number.

It is an amenable number.

2152440493 is a deficient number, since it is larger than the sum of its proper divisors (351418913).

2152440493 is an equidigital number, since it uses as much as digits as its factorization.

2152440493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43927371 (or 43927364 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 2152440493 is about 46394.4015264773. The cubic root of 2152440493 is about 1291.1510454280.

The spelling of 2152440493 in words is "two billion, one hundred fifty-two million, four hundred forty thousand, four hundred ninety-three".