8930220638 has 4 divisors (see below), whose sum is σ = 13395330960. Its totient is φ = 4465110318.

The previous prime is 8930220587. The next prime is 8930220661. The reversal of 8930220638 is 8360220398.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×8930220638² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8930220595 and 8930220604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2232555158 + ... + 2232555161.

It is an arithmetic number, because the mean of its divisors is an integer number (3348832740).

Almost surely, 2^8930220638 is an apocalyptic number.

8930220638 is a deficient number, since it is larger than the sum of its proper divisors (4465110322).

8930220638 is a wasteful number, since it uses less digits than its factorization.

8930220638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4465110321.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 8930220638 is about 94499.8446453749. The cubic root of 8930220638 is about 2074.6940576079.

The spelling of 8930220638 in words is "eight billion, nine hundred thirty million, two hundred twenty thousand, six hundred thirty-eight".