4681621806 has 32 divisors (see below), whose sum is σ = 10033486848. Its totient is φ = 1451045760.

The previous prime is 4681621787. The next prime is 4681621909. The reversal of 4681621806 is 6081261864.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 268030 + ... + 284961.

It is an arithmetic number, because the mean of its divisors is an integer number (313546464).

Almost surely, 2^4681621806 is an apocalyptic number.

4681621806 is an abundant number, since it is smaller than the sum of its proper divisors (5351865042).

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

4681621806 is a wasteful number, since it uses less digits than its factorization.

4681621806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553096.

The product of its (nonzero) digits is 110592, while the sum is 42.

The square root of 4681621806 is about 68422.3779621843. The cubic root of 4681621806 is about 1672.8825169351.

The spelling of 4681621806 in words is "four billion, six hundred eighty-one million, six hundred twenty-one thousand, eight hundred six".