485281381 has 8 divisors (see below), whose sum is σ = 536735864. Its totient is φ = 435844800.

The previous prime is 485281373. The next prime is 485281399. The reversal of 485281381 is 183182584.

It can be written as a sum of positive squares in 4 ways, for example, as 43020481 + 442260900 = 6559^2 + 21030^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 485281381 - 2³ = 485281373 is a prime.

It is a super-2 number, since 2×485281381² = 470996037490534322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (485281681) 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 in 7 ways as a sum of consecutive naturals, for example, 503970 + ... + 504931.

It is an arithmetic number, because the mean of its divisors is an integer number (67091983).

Almost surely, 2^485281381 is an apocalyptic number.

It is an amenable number.

485281381 is a deficient number, since it is larger than the sum of its proper divisors (51454483).

485281381 is a wasteful number, since it uses less digits than its factorization.

485281381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008951.

The product of its digits is 61440, while the sum is 40.

The square root of 485281381 is about 22029.1030457438. The cubic root of 485281381 is about 785.8347138241.

The spelling of 485281381 in words is "four hundred eighty-five million, two hundred eighty-one thousand, three hundred eighty-one".