8549437901 has 2 divisors, whose sum is σ = 8549437902. Its totient is φ = 8549437900.

The previous prime is 8549437867. The next prime is 8549437903. The reversal of 8549437901 is 1097349458.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8447448100 + 101989801 = 91910^2 + 10099^2 .

It is a cyclic number.

It is not a de Polignac number, because 8549437901 - 2⁶ = 8549437837 is a prime.

Together with 8549437903, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8549437901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8549437903) 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, 4274718950 + 4274718951.

It is an arithmetic number, because the mean of its divisors is an integer number (4274718951).

Almost surely, 2^8549437901 is an apocalyptic number.

It is an amenable number.

8549437901 is a deficient number, since it is larger than the sum of its proper divisors (1).

8549437901 is an equidigital number, since it uses as much as digits as its factorization.

8549437901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The square root of 8549437901 is about 92463.1705112906. The cubic root of 8549437901 is about 2044.7765412424.

The spelling of 8549437901 in words is "eight billion, five hundred forty-nine million, four hundred thirty-seven thousand, nine hundred one".