9490510181 has 2 divisors, whose sum is σ = 9490510182. Its totient is φ = 9490510180.

The previous prime is 9490510157. The next prime is 9490510201. The reversal of 9490510181 is 1810150949.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5927614081 + 3562896100 = 76991^2 + 59690^2 .

It is an emirp because it is prime and its reverse (1810150949) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9490510181 - 2¹⁰ = 9490509157 is a prime.

It is a super-2 number, since 2×9490510181² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9490510111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4745255090 + 4745255091.

It is an arithmetic number, because the mean of its divisors is an integer number (4745255091).

Almost surely, 2^9490510181 is an apocalyptic number.

It is an amenable number.

9490510181 is a deficient number, since it is larger than the sum of its proper divisors (1).

9490510181 is an equidigital number, since it uses as much as digits as its factorization.

9490510181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 38.

The square root of 9490510181 is about 97419.2495403244. The cubic root of 9490510181 is about 2117.2063431578.

The spelling of 9490510181 in words is "nine billion, four hundred ninety million, five hundred ten thousand, one hundred eighty-one".