481089181 has 2 divisors, whose sum is σ = 481089182. Its totient is φ = 481089180.

The previous prime is 481089179. The next prime is 481089221. The reversal of 481089181 is 181980184.

481089181 = 15509² + 15510².

It is an a-pointer prime, because the next prime (481089221) can be obtained adding 481089181 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 240560100 + 240529081 = 15510^2 + 15509^2 .

It is a cyclic number.

It is not a de Polignac number, because 481089181 - 2¹ = 481089179 is a prime.

It is a super-2 number, since 2×481089181² = 462893600150501522, which contains 22 as substring.

Together with 481089179, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (481089151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 240544590 + 240544591.

It is an arithmetic number, because the mean of its divisors is an integer number (240544591).

Almost surely, 2^481089181 is an apocalyptic number.

481089181 is the 15510-th centered square number.

It is an amenable number.

481089181 is a deficient number, since it is larger than the sum of its proper divisors (1).

481089181 is an equidigital number, since it uses as much as digits as its factorization.

481089181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 40.

The square root of 481089181 is about 21933.7452570235. The cubic root of 481089181 is about 783.5653030013.

The spelling of 481089181 in words is "four hundred eighty-one million, eighty-nine thousand, one hundred eighty-one".