481581816 has 16 divisors (see below), whose sum is σ = 1203954600. Its totient is φ = 160527264.

The previous prime is 481581799. The next prime is 481581829. The reversal of 481581816 is 618185184.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10032931 + ... + 10032978.

Almost surely, 2^481581816 is an apocalyptic number.

It is an amenable number.

481581816 is an abundant number, since it is smaller than the sum of its proper divisors (722372784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

481581816 is a wasteful number, since it uses less digits than its factorization.

481581816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20065918 (or 20065914 counting only the distinct ones).

The product of its digits is 61440, while the sum is 42.

The square root of 481581816 is about 21944.9724538446. The cubic root of 481581816 is about 783.8326685437.

The spelling of 481581816 in words is "four hundred eighty-one million, five hundred eighty-one thousand, eight hundred sixteen".