4978274549 has 2 divisors, whose sum is σ = 4978274550. Its totient is φ = 4978274548.

The previous prime is 4978274527. The next prime is 4978274603. The reversal of 4978274549 is 9454728794.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4689784324 + 288490225 = 68482^2 + 16985^2 .

It is a cyclic number.

It is not a de Polignac number, because 4978274549 - 2²⁰ = 4977225973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4978274149) 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 as a sum of consecutive naturals, namely, 2489137274 + 2489137275.

It is an arithmetic number, because the mean of its divisors is an integer number (2489137275).

Almost surely, 2^4978274549 is an apocalyptic number.

It is an amenable number.

4978274549 is a deficient number, since it is larger than the sum of its proper divisors (1).

4978274549 is an equidigital number, since it uses as much as digits as its factorization.

4978274549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20321280, while the sum is 59.

The square root of 4978274549 is about 70556.8887423475. Note that the first 3 decimals coincide. The cubic root of 4978274549 is about 1707.4956843032.

The spelling of 4978274549 in words is "four billion, nine hundred seventy-eight million, two hundred seventy-four thousand, five hundred forty-nine".