481692181 has 2 divisors, whose sum is σ = 481692182. Its totient is φ = 481692180.

The previous prime is 481692131. The next prime is 481692191. The reversal of 481692181 is 181296184.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 447703281 + 33988900 = 21159^2 + 5830^2 .

It is a cyclic number.

It is not a de Polignac number, because 481692181 - 2¹¹ = 481690133 is a prime.

It is a super-2 number, since 2×481692181² = 464054714473073522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (481692131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 240846090 + 240846091.

It is an arithmetic number, because the mean of its divisors is an integer number (240846091).

Almost surely, 2^481692181 is an apocalyptic number.

It is an amenable number.

481692181 is a deficient number, since it is larger than the sum of its proper divisors (1).

481692181 is an equidigital number, since it uses as much as digits as its factorization.

481692181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27648, while the sum is 40.

The square root of 481692181 is about 21947.4868948588. The cubic root of 481692181 is about 783.8925414334.

The spelling of 481692181 in words is "four hundred eighty-one million, six hundred ninety-two thousand, one hundred eighty-one".