4181213149 has 2 divisors, whose sum is σ = 4181213150. Its totient is φ = 4181213148.

The previous prime is 4181213143. The next prime is 4181213159. The reversal of 4181213149 is 9413121814.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3415584249 + 765628900 = 58443^2 + 27670^2 .

It is a cyclic number.

It is not a de Polignac number, because 4181213149 - 2¹⁷ = 4181082077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4181213143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2090606574 + 2090606575.

It is an arithmetic number, because the mean of its divisors is an integer number (2090606575).

Almost surely, 2^4181213149 is an apocalyptic number.

It is an amenable number.

4181213149 is a deficient number, since it is larger than the sum of its proper divisors (1).

4181213149 is an equidigital number, since it uses as much as digits as its factorization.

4181213149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 34.

The square root of 4181213149 is about 64662.3008328655. The cubic root of 4181213149 is about 1611.0193959542.

The spelling of 4181213149 in words is "four billion, one hundred eighty-one million, two hundred thirteen thousand, one hundred forty-nine".