19850207 has 8 divisors (see below), whose sum is σ = 21411936. Its totient is φ = 18293472.

The previous prime is 19850189. The next prime is 19850209. The reversal of 19850207 is 70205891.

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

It is a cyclic number.

It is not a de Polignac number, because 19850207 - 2²⁰ = 18801631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19850209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13838 + ... + 15204.

It is an arithmetic number, because the mean of its divisors is an integer number (2676492).

Almost surely, 2^19850207 is an apocalyptic number.

19850207 is a deficient number, since it is larger than the sum of its proper divisors (1561729).

19850207 is a wasteful number, since it uses less digits than its factorization.

19850207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2497.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 19850207 is about 4455.3571125107. The cubic root of 19850207 is about 270.7623948226.

It can be divided in two parts, 198 and 50207, that added together give a palindrome (50405).

The spelling of 19850207 in words is "nineteen million, eight hundred fifty thousand, two hundred seven".