2645257429 has 6 divisors (see below), whose sum is σ = 2648879286. Its totient is φ = 2641640040.

The previous prime is 2645257427. The next prime is 2645257441. The reversal of 2645257429 is 9247525462.

It can be written as a sum of positive squares in only one way, i.e., 2391014404 + 254243025 = 48898^2 + 15945^2 .

It is not a de Polignac number, because 2645257429 - 2¹ = 2645257427 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 (2645257423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1128799 + ... + 1131139.

It is an arithmetic number, because the mean of its divisors is an integer number (441479881).

Almost surely, 2^2645257429 is an apocalyptic number.

It is an amenable number.

2645257429 is a deficient number, since it is larger than the sum of its proper divisors (3621857).

2645257429 is an frugal number, since it uses more digits than its factorization.

2645257429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4467 (or 3404 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 46.

The square root of 2645257429 is about 51432.0661552693. The cubic root of 2645257429 is about 1383.0014886530.

The spelling of 2645257429 in words is "two billion, six hundred forty-five million, two hundred fifty-seven thousand, four hundred twenty-nine".