8821486637 has 2 divisors, whose sum is σ = 8821486638. Its totient is φ = 8821486636.

The previous prime is 8821486613. The next prime is 8821486789. The reversal of 8821486637 is 7366841288.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8127743716 + 693742921 = 90154^2 + 26339^2 .

It is a cyclic number.

It is not a de Polignac number, because 8821486637 - 2¹⁰ = 8821485613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8821486237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4410743318 + 4410743319.

It is an arithmetic number, because the mean of its divisors is an integer number (4410743319).

Almost surely, 2^8821486637 is an apocalyptic number.

It is an amenable number.

8821486637 is a deficient number, since it is larger than the sum of its proper divisors (1).

8821486637 is an equidigital number, since it uses as much as digits as its factorization.

8821486637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3096576, while the sum is 53.

The square root of 8821486637 is about 93922.7695343360. The cubic root of 8821486637 is about 2066.2391854850.

The spelling of 8821486637 in words is "eight billion, eight hundred twenty-one million, four hundred eighty-six thousand, six hundred thirty-seven".