4812628581 has 8 divisors (see below), whose sum is σ = 7129820160. Its totient is φ = 3208419036.

The previous prime is 4812628577. The next prime is 4812628607. The reversal of 4812628581 is 1858262184.

4812628581 is a `hidden beast` number, since 4 + 8 + 1 + 2 + 62 + 8 + 581 = 666.

It is not a de Polignac number, because 4812628581 - 2² = 4812628577 is a prime.

It is a super-2 number, since 2×4812628581² = 46322787717316147122, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4812628181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89122725 + ... + 89122778.

It is an arithmetic number, because the mean of its divisors is an integer number (891227520).

Almost surely, 2^4812628581 is an apocalyptic number.

It is an amenable number.

4812628581 is a deficient number, since it is larger than the sum of its proper divisors (2317191579).

4812628581 is a wasteful number, since it uses less digits than its factorization.

4812628581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178245512 (or 178245506 counting only the distinct ones).

The product of its digits is 245760, while the sum is 45.

The square root of 4812628581 is about 69373.1113688870. Note that the first 3 decimals coincide. The cubic root of 4812628581 is about 1688.3433903650.

The spelling of 4812628581 in words is "four billion, eight hundred twelve million, six hundred twenty-eight thousand, five hundred eighty-one".