481772538 has 24 divisors (see below), whose sum is σ = 1124136468. Its totient is φ = 148237632.

The previous prime is 481772477. The next prime is 481772539. The reversal of 481772538 is 835277184.

481772538 is a `hidden beast` number, since 48 + 1 + 7 + 72 + 538 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 465394329 + 16378209 = 21573^2 + 4047^2 .

It is a super-2 number, since 2×481772538² = 464209556741922888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 481772493 and 481772502.

It is not an unprimeable number, because it can be changed into a prime (481772539) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1029195 + ... + 1029662.

Almost surely, 2^481772538 is an apocalyptic number.

481772538 is an abundant number, since it is smaller than the sum of its proper divisors (642363930).

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

481772538 is a wasteful number, since it uses less digits than its factorization.

481772538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2058878 (or 2058875 counting only the distinct ones).

The product of its digits is 376320, while the sum is 45.

The square root of 481772538 is about 21949.3174836941. The cubic root of 481772538 is about 783.9361292633.

The spelling of 481772538 in words is "four hundred eighty-one million, seven hundred seventy-two thousand, five hundred thirty-eight".