19906801 has 8 divisors (see below), whose sum is σ = 20318144. Its totient is φ = 19498320.

The previous prime is 19906793. The next prime is 19906811. The reversal of 19906801 is 10860991.

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 19906801 - 2³ = 19906793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19906811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18196 + ... + 19258.

It is an arithmetic number, because the mean of its divisors is an integer number (2539768).

Almost surely, 2^19906801 is an apocalyptic number.

It is an amenable number.

19906801 is a deficient number, since it is larger than the sum of its proper divisors (411343).

19906801 is a wasteful number, since it uses less digits than its factorization.

19906801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1431.

The product of its (nonzero) digits is 3888, while the sum is 34.

The square root of 19906801 is about 4461.7038225324. The cubic root of 19906801 is about 271.0194700136.

The spelling of 19906801 in words is "nineteen million, nine hundred six thousand, eight hundred one".