8954987281 has 2 divisors, whose sum is σ = 8954987282. Its totient is φ = 8954987280.

The previous prime is 8954987273. The next prime is 8954987347. The reversal of 8954987281 is 1827894598.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8296295056 + 658692225 = 91084^2 + 25665^2 .

It is a cyclic number.

It is not a de Polignac number, because 8954987281 - 2³ = 8954987273 is a prime.

It is a super-2 number, since 2×8954987281² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8954987381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4477493640 + 4477493641.

It is an arithmetic number, because the mean of its divisors is an integer number (4477493641).

Almost surely, 2^8954987281 is an apocalyptic number.

It is an amenable number.

8954987281 is a deficient number, since it is larger than the sum of its proper divisors (1).

8954987281 is an equidigital number, since it uses as much as digits as its factorization.

8954987281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11612160, while the sum is 61.

The square root of 8954987281 is about 94630.7945702666. The cubic root of 8954987281 is about 2076.6102394119.

The spelling of 8954987281 in words is "eight billion, nine hundred fifty-four million, nine hundred eighty-seven thousand, two hundred eighty-one".