19808043 has 16 divisors (see below), whose sum is σ = 28649376. Its totient is φ = 12124160.

The previous prime is 19808027. The next prime is 19808053. The reversal of 19808043 is 34080891.

It is a cyclic number.

It is not a de Polignac number, because 19808043 - 2⁴ = 19808027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19807995 and 19808013.

It is not an unprimeable number, because it can be changed into a prime (19808053) 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, 2646 + ... + 6827.

It is an arithmetic number, because the mean of its divisors is an integer number (1790586).

Almost surely, 2^19808043 is an apocalyptic number.

19808043 is a deficient number, since it is larger than the sum of its proper divisors (8841333).

19808043 is a wasteful number, since it uses less digits than its factorization.

19808043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9534.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 19808043 is about 4450.6227654116. The cubic root of 19808043 is about 270.5705493268.

The spelling of 19808043 in words is "nineteen million, eight hundred eight thousand, forty-three".