19700849 has 16 divisors (see below), whose sum is σ = 23182848. Its totient is φ = 16392192.

The previous prime is 19700839. The next prime is 19700851. The reversal of 19700849 is 94800791.

It is a cyclic number.

It is not a de Polignac number, because 19700849 - 2⁴ = 19700833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19700809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76529 + ... + 76785.

It is an arithmetic number, because the mean of its divisors is an integer number (1448928).

Almost surely, 2^19700849 is an apocalyptic number.

It is an amenable number.

19700849 is a deficient number, since it is larger than the sum of its proper divisors (3481999).

19700849 is a wasteful number, since it uses less digits than its factorization.

19700849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 19700849 is about 4438.5638443082. The cubic root of 19700849 is about 270.0815894258.

The spelling of 19700849 in words is "nineteen million, seven hundred thousand, eight hundred forty-nine".