2457028789 has 4 divisors (see below), whose sum is σ = 2457140524. Its totient is φ = 2456917056.

The previous prime is 2457028781. The next prime is 2457028837. The reversal of 2457028789 is 9878207542.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 673402500 + 1783626289 = 25950^2 + 42233^2 .

It is a cyclic number.

It is not a de Polignac number, because 2457028789 - 2³ = 2457028781 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 (2457028781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10722 + ... + 70915.

It is an arithmetic number, because the mean of its divisors is an integer number (614285131).

Almost surely, 2^2457028789 is an apocalyptic number.

It is an amenable number.

2457028789 is a deficient number, since it is larger than the sum of its proper divisors (111735).

2457028789 is an equidigital number, since it uses as much as digits as its factorization.

2457028789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111734.

The product of its (nonzero) digits is 2257920, while the sum is 52.

The square root of 2457028789 is about 49568.4253229816. The cubic root of 2457028789 is about 1349.3877038606.

The spelling of 2457028789 in words is "two billion, four hundred fifty-seven million, twenty-eight thousand, seven hundred eighty-nine".