8541621208 has 32 divisors (see below), whose sum is σ = 16717968000. Its totient is φ = 4086593280.

The previous prime is 8541621203. The next prime is 8541621211. The reversal of 8541621208 is 8021261458.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8541621203) 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, 171423 + ... + 215566.

It is an arithmetic number, because the mean of its divisors is an integer number (522436500).

Almost surely, 2^8541621208 is an apocalyptic number.

It is an amenable number.

8541621208 is a deficient number, since it is larger than the sum of its proper divisors (8176346792).

8541621208 is a wasteful number, since it uses less digits than its factorization.

8541621208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387115 (or 387111 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 37.

The square root of 8541621208 is about 92420.8916208884. The cubic root of 8541621208 is about 2044.1531761235.

The spelling of 8541621208 in words is "eight billion, five hundred forty-one million, six hundred twenty-one thousand, two hundred eight".