18950128 has 20 divisors (see below), whose sum is σ = 37062360. Its totient is φ = 9385664.

The previous prime is 18950119. The next prime is 18950153. The reversal of 18950128 is 82105981.

It is a junction number, because it is equal to n+sod(n) for n = 18950093 and 18950102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3823 + ... + 7246.

It is an arithmetic number, because the mean of its divisors is an integer number (1853118).

Almost surely, 2^18950128 is an apocalyptic number.

It is an amenable number.

18950128 is a deficient number, since it is larger than the sum of its proper divisors (18112232).

18950128 is a wasteful number, since it uses less digits than its factorization.

18950128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11184 (or 11178 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 34.

The square root of 18950128 is about 4353.1744738754. The cubic root of 18950128 is about 266.6064891988.

The spelling of 18950128 in words is "eighteen million, nine hundred fifty thousand, one hundred twenty-eight".