8418721930 has 32 divisors (see below), whose sum is σ = 15450974208. Its totient is φ = 3301521600.

The previous prime is 8418721873. The next prime is 8418721931. The reversal of 8418721930 is 391278148.

It is not an unprimeable number, because it can be changed into a prime (8418721931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 827575 + ... + 837685.

It is an arithmetic number, because the mean of its divisors is an integer number (482842944).

Almost surely, 2^8418721930 is an apocalyptic number.

8418721930 is a deficient number, since it is larger than the sum of its proper divisors (7032252278).

8418721930 is a wasteful number, since it uses less digits than its factorization.

8418721930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11742.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 8418721930 is about 91753.5935536042. The cubic root of 8418721930 is about 2034.3018232893.

The spelling of 8418721930 in words is "eight billion, four hundred eighteen million, seven hundred twenty-one thousand, nine hundred thirty".