481491149 has 2 divisors, whose sum is σ = 481491150. Its totient is φ = 481491148.

The previous prime is 481491121. The next prime is 481491169. The reversal of 481491149 is 941194184.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 294294025 + 187197124 = 17155^2 + 13682^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-481491149 is a prime.

It is a Sophie Germain prime.

It is a Chen 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 (481491169) 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, 240745574 + 240745575.

It is an arithmetic number, because the mean of its divisors is an integer number (240745575).

Almost surely, 2^481491149 is an apocalyptic number.

It is an amenable number.

481491149 is a deficient number, since it is larger than the sum of its proper divisors (1).

481491149 is an equidigital number, since it uses as much as digits as its factorization.

481491149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 41.

The square root of 481491149 is about 21942.9065759302. The cubic root of 481491149 is about 783.7834749524.

The spelling of 481491149 in words is "four hundred eighty-one million, four hundred ninety-one thousand, one hundred forty-nine".