19812801 has 16 divisors (see below), whose sum is σ = 27967040. Its totient is φ = 12441600.

The previous prime is 19812791. The next prime is 19812823. The reversal of 19812801 is 10821891.

It is not a de Polignac number, because 19812801 - 2¹⁴ = 19796417 is a prime.

It is a super-3 number, since 3×19812801³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (19812841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10101 + ... + 11901.

It is an arithmetic number, because the mean of its divisors is an integer number (1747940).

Almost surely, 2^19812801 is an apocalyptic number.

It is an amenable number.

19812801 is a deficient number, since it is larger than the sum of its proper divisors (8154239).

19812801 is a wasteful number, since it uses less digits than its factorization.

19812801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2016.

The product of its (nonzero) digits is 1152, while the sum is 30.

The square root of 19812801 is about 4451.1572652514. The cubic root of 19812801 is about 270.5922117665.

The spelling of 19812801 in words is "nineteen million, eight hundred twelve thousand, eight hundred one".