19848849 has 4 divisors (see below), whose sum is σ = 26465136. Its totient is φ = 13232564.

The previous prime is 19848841. The next prime is 19848859. The reversal of 19848849 is 94884891.

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 a cyclic number.

It is not a de Polignac number, because 19848849 - 2³ = 19848841 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (19848841) 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, 3308139 + ... + 3308144.

It is an arithmetic number, because the mean of its divisors is an integer number (6616284).

Almost surely, 2^19848849 is an apocalyptic number.

It is an amenable number.

19848849 is a deficient number, since it is larger than the sum of its proper divisors (6616287).

19848849 is an equidigital number, since it uses as much as digits as its factorization.

19848849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6616286.

The product of its digits is 663552, while the sum is 51.

The square root of 19848849 is about 4455.2047091015. The cubic root of 19848849 is about 270.7562201814.

The spelling of 19848849 in words is "nineteen million, eight hundred forty-eight thousand, eight hundred forty-nine".