2656874453 has 4 divisors (see below), whose sum is σ = 2657047308. Its totient is φ = 2656701600.

The previous prime is 2656874449. The next prime is 2656874491. The reversal of 2656874453 is 3544786562.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 626651089 + 2030223364 = 25033^2 + 45058^2 .

It is a cyclic number.

It is not a de Polignac number, because 2656874453 - 2² = 2656874449 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 (2656804453) 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, 60848 + ... + 94953.

It is an arithmetic number, because the mean of its divisors is an integer number (664261827).

Almost surely, 2^2656874453 is an apocalyptic number.

It is an amenable number.

2656874453 is a deficient number, since it is larger than the sum of its proper divisors (172855).

2656874453 is a wasteful number, since it uses less digits than its factorization.

2656874453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172854.

The product of its digits is 4838400, while the sum is 50.

The square root of 2656874453 is about 51544.8780481630. The cubic root of 2656874453 is about 1385.0230813706.

The spelling of 2656874453 in words is "two billion, six hundred fifty-six million, eight hundred seventy-four thousand, four hundred fifty-three".