19859241 has 4 divisors (see below), whose sum is σ = 26478992. Its totient is φ = 13239492.

The previous prime is 19859209. The next prime is 19859263. The reversal of 19859241 is 14295891.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 19859241 - 2⁵ = 19859209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19859241.

It is not an unprimeable number, because it can be changed into a prime (19859041) 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, 3309871 + ... + 3309876.

It is an arithmetic number, because the mean of its divisors is an integer number (6619748).

Almost surely, 2^19859241 is an apocalyptic number.

It is an amenable number.

19859241 is a deficient number, since it is larger than the sum of its proper divisors (6619751).

19859241 is an equidigital number, since it uses as much as digits as its factorization.

19859241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6619750.

The product of its digits is 25920, while the sum is 39.

The square root of 19859241 is about 4456.3708328639. The cubic root of 19859241 is about 270.8034640248.

It can be divided in two parts, 19859 and 241, that added together give a triangular number (20100 = T₂₀₀).

The spelling of 19859241 in words is "nineteen million, eight hundred fifty-nine thousand, two hundred forty-one".