30638328889 has 8 divisors (see below), whose sum is σ = 35508405888. Its totient is φ = 25891545120.

The previous prime is 30638328887. The next prime is 30638328893. The reversal of 30638328889 is 98882383603.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30638328889 - 2¹ = 30638328887 is a prime.

It is a super-2 number, since 2×30638328889² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30638328883) 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, 30822772 + ... + 30823765.

It is an arithmetic number, because the mean of its divisors is an integer number (4438550736).

Almost surely, 2^30638328889 is an apocalyptic number.

It is an amenable number.

30638328889 is a deficient number, since it is larger than the sum of its proper divisors (4870076999).

30638328889 is an equidigital number, since it uses as much as digits as its factorization.

30638328889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61646615.

The product of its (nonzero) digits is 11943936, while the sum is 58.

The spelling of 30638328889 in words is "thirty billion, six hundred thirty-eight million, three hundred twenty-eight thousand, eight hundred eighty-nine".