4609621881 has 24 divisors (see below), whose sum is σ = 6735231360. Its totient is φ = 3037728096.

The previous prime is 4609621873. The next prime is 4609621931. The reversal of 4609621881 is 1881269064.

4609621881 is a `hidden beast` number, since 460 + 9 + 6 + 2 + 188 + 1 = 666.

It is not a de Polignac number, because 4609621881 - 2³ = 4609621873 is a prime.

It is a super-2 number, since 2×4609621881² = 42497227771587956322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4609620881) 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 23 ways as a sum of consecutive naturals, for example, 429280 + ... + 439886.

It is an arithmetic number, because the mean of its divisors is an integer number (280634640).

Almost surely, 2^4609621881 is an apocalyptic number.

It is an amenable number.

4609621881 is a deficient number, since it is larger than the sum of its proper divisors (2125609479).

4609621881 is a wasteful number, since it uses less digits than its factorization.

4609621881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11165 (or 11162 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 4609621881 is about 67894.1962247142. The cubic root of 4609621881 is about 1664.2622698246.

The spelling of 4609621881 in words is "four billion, six hundred nine million, six hundred twenty-one thousand, eight hundred eighty-one".