19985038 has 8 divisors (see below), whose sum is σ = 30053520. Its totient is φ = 9967200.

The previous prime is 19985033. The next prime is 19985051. The reversal of 19985038 is 83058991.

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

It is a super-2 number, since 2×19985038² = 798803487722888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19984985 and 19985003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19985033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11658 + ... + 13261.

It is an arithmetic number, because the mean of its divisors is an integer number (3756690).

Almost surely, 2^19985038 is an apocalyptic number.

19985038 is a deficient number, since it is larger than the sum of its proper divisors (10068482).

19985038 is a wasteful number, since it uses less digits than its factorization.

19985038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25322.

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 19985038 is about 4470.4628395727. The cubic root of 19985038 is about 271.3740562459.

The spelling of 19985038 in words is "nineteen million, nine hundred eighty-five thousand, thirty-eight".