19985102 has 8 divisors (see below), whose sum is σ = 30023112. Its totient is φ = 9977400.

The previous prime is 19985099. The next prime is 19985113. The reversal of 19985102 is 20158991.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5849 + ... + 8612.

It is an arithmetic number, because the mean of its divisors is an integer number (3752889).

Almost surely, 2^19985102 is an apocalyptic number.

19985102 is a deficient number, since it is larger than the sum of its proper divisors (10038010).

19985102 is a wasteful number, since it uses less digits than its factorization.

19985102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15154.

The product of its (nonzero) digits is 6480, while the sum is 35.

The square root of 19985102 is about 4470.4699976624. The cubic root of 19985102 is about 271.3743459280.

Subtracting 19985102 from its reverse (20158991), we obtain a square (173889 = 417²).

The spelling of 19985102 in words is "nineteen million, nine hundred eighty-five thousand, one hundred two".