2478727513 has 4 divisors (see below), whose sum is σ = 2479303120. Its totient is φ = 2478151908.

The previous prime is 2478727507. The next prime is 2478727541. The reversal of 2478727513 is 3157278742.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2478727513 is a prime.

It is a super-2 number, since 2×2478727513² = 12288180167406330338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2478127513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 281295 + ... + 289972.

It is an arithmetic number, because the mean of its divisors is an integer number (619825780).

Almost surely, 2^2478727513 is an apocalyptic number.

It is an amenable number.

2478727513 is a deficient number, since it is larger than the sum of its proper divisors (575607).

2478727513 is an equidigital number, since it uses as much as digits as its factorization.

2478727513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575606.

The product of its digits is 658560, while the sum is 46.

The square root of 2478727513 is about 49786.8206757572. The cubic root of 2478727513 is about 1353.3483437161.

The spelling of 2478727513 in words is "two billion, four hundred seventy-eight million, seven hundred twenty-seven thousand, five hundred thirteen".