428106081938 has 8 divisors (see below), whose sum is σ = 651743587632. Its totient is φ = 210858219396.

The previous prime is 428106081919. The next prime is 428106081943. The reversal of 428106081938 is 839180601824.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1597410620 + ... + 1597410887.

It is an arithmetic number, because the mean of its divisors is an integer number (81467948454).

Almost surely, 2^428106081938 is an apocalyptic number.

428106081938 is a deficient number, since it is larger than the sum of its proper divisors (223637505694).

428106081938 is a wasteful number, since it uses less digits than its factorization.

428106081938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3194821576.

The product of its (nonzero) digits is 663552, while the sum is 50.

The spelling of 428106081938 in words is "four hundred twenty-eight billion, one hundred six million, eighty-one thousand, nine hundred thirty-eight".