9181006049 has 2 divisors, whose sum is σ = 9181006050. Its totient is φ = 9181006048.

The previous prime is 9181006007. The next prime is 9181006127. The reversal of 9181006049 is 9406001819.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5135155600 + 4045850449 = 71660^2 + 63607^2 .

It is an emirp because it is prime and its reverse (9406001819) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9181006049 - 2¹² = 9181001953 is a prime.

It is not a weakly prime, because it can be changed into another prime (9181006949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4590503024 + 4590503025.

It is an arithmetic number, because the mean of its divisors is an integer number (4590503025).

Almost surely, 2^9181006049 is an apocalyptic number.

It is an amenable number.

9181006049 is a deficient number, since it is larger than the sum of its proper divisors (1).

9181006049 is an equidigital number, since it uses as much as digits as its factorization.

9181006049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 9181006049 is about 95817.5664948761. The cubic root of 9181006049 is about 2093.9361009435.

The spelling of 9181006049 in words is "nine billion, one hundred eighty-one million, six thousand, forty-nine".