481789881 has 6 divisors (see below), whose sum is σ = 695918730. Its totient is φ = 321193248.

The previous prime is 481789873. The next prime is 481789927. The reversal of 481789881 is 188987184.

It is a happy number.

481789881 is a `hidden beast` number, since 481 + 7 + 89 + 8 + 81 = 666.

It can be written as a sum of positive squares in only one way, i.e., 470195856 + 11594025 = 21684^2 + 3405^2 .

It is not a de Polignac number, because 481789881 - 2³ = 481789873 is a prime.

It is a super-2 number, since 2×481789881² = 464242978867988322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (481789381) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26766096 + ... + 26766113.

It is an arithmetic number, because the mean of its divisors is an integer number (115986455).

Almost surely, 2^481789881 is an apocalyptic number.

It is an amenable number.

481789881 is a deficient number, since it is larger than the sum of its proper divisors (214128849).

481789881 is a wasteful number, since it uses less digits than its factorization.

481789881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53532215 (or 53532212 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 54.

The square root of 481789881 is about 21949.7125493707. The cubic root of 481789881 is about 783.9455359439.

The spelling of 481789881 in words is "four hundred eighty-one million, seven hundred eighty-nine thousand, eight hundred eighty-one".