2549643847 has 2 divisors, whose sum is σ = 2549643848. Its totient is φ = 2549643846.

The previous prime is 2549643823. The next prime is 2549643871. The reversal of 2549643847 is 7483469452.

It is a balanced prime because it is at equal distance from previous prime (2549643823) and next prime (2549643871).

It is a cyclic number.

It is not a de Polignac number, because 2549643847 - 2¹⁵ = 2549611079 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2549643794 and 2549643803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2549641847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1274821923 + 1274821924.

It is an arithmetic number, because the mean of its divisors is an integer number (1274821924).

Almost surely, 2^2549643847 is an apocalyptic number.

2549643847 is a deficient number, since it is larger than the sum of its proper divisors (1).

2549643847 is an equidigital number, since it uses as much as digits as its factorization.

2549643847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5806080, while the sum is 52.

The square root of 2549643847 is about 50493.9981284905. The cubic root of 2549643847 is about 1366.1336004800.

The spelling of 2549643847 in words is "two billion, five hundred forty-nine million, six hundred forty-three thousand, eight hundred forty-seven".