2547486749 has 4 divisors (see below), whose sum is σ = 2547811680. Its totient is φ = 2547161820.

The previous prime is 2547486727. The next prime is 2547486791. The reversal of 2547486749 is 9476847452.

It is a happy number.

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 not a de Polignac number, because 2547486749 - 2⁸ = 2547486493 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2547486694 and 2547486703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2547485749) 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, 150407 + ... + 166484.

It is an arithmetic number, because the mean of its divisors is an integer number (636952920).

Almost surely, 2^2547486749 is an apocalyptic number.

It is an amenable number.

2547486749 is a deficient number, since it is larger than the sum of its proper divisors (324931).

2547486749 is an equidigital number, since it uses as much as digits as its factorization.

2547486749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324930.

The product of its digits is 13547520, while the sum is 56.

The square root of 2547486749 is about 50472.6336641947. The cubic root of 2547486749 is about 1365.7482243668.

The spelling of 2547486749 in words is "two billion, five hundred forty-seven million, four hundred eighty-six thousand, seven hundred forty-nine".