2756478413 has 8 divisors (see below), whose sum is σ = 3143134008. Its totient is φ = 2394768384.

The previous prime is 2756478383. The next prime is 2756478451. The reversal of 2756478413 is 3148746572.

It can be written as a sum of positive squares in 4 ways, for example, as 195916009 + 2560562404 = 13997^2 + 50602^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2756478413 - 2⁸ = 2756478157 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 (2756478013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6236156 + ... + 6236597.

It is an arithmetic number, because the mean of its divisors is an integer number (392891751).

Almost surely, 2^2756478413 is an apocalyptic number.

It is an amenable number.

2756478413 is a deficient number, since it is larger than the sum of its proper divisors (386655595).

2756478413 is a wasteful number, since it uses less digits than its factorization.

2756478413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12472783.

The product of its digits is 1128960, while the sum is 47.

The square root of 2756478413 is about 52502.1753168381. The cubic root of 2756478413 is about 1402.1189702956.

The spelling of 2756478413 in words is "two billion, seven hundred fifty-six million, four hundred seventy-eight thousand, four hundred thirteen".