2731409453 has 4 divisors (see below), whose sum is σ = 2731686108. Its totient is φ = 2731132800.

The previous prime is 2731409423. The next prime is 2731409489. The reversal of 2731409453 is 3549041372.

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 655513609 + 2075895844 = 25603^2 + 45562^2 .

It is a cyclic number.

It is not a de Polignac number, because 2731409453 - 2¹⁰ = 2731408429 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 (2731409423) 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, 122948 + ... + 143453.

It is an arithmetic number, because the mean of its divisors is an integer number (682921527).

Almost surely, 2^2731409453 is an apocalyptic number.

It is an amenable number.

2731409453 is a deficient number, since it is larger than the sum of its proper divisors (276655).

2731409453 is a wasteful number, since it uses less digits than its factorization.

2731409453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276654.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 2731409453 is about 52262.8879129349. The cubic root of 2731409453 is about 1397.8554671725.

The spelling of 2731409453 in words is "two billion, seven hundred thirty-one million, four hundred nine thousand, four hundred fifty-three".