19906848001 has 4 divisors (see below), whose sum is σ = 19907136004. Its totient is φ = 19906560000.

The previous prime is 19906847993. The next prime is 19906848029. The reversal of 19906848001 is 10084860991.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 10090001601 + 9816846400 = 100449^2 + 99080^2 .

It is a 3-Lehmer number, since φ(19906848001) divides (19906848001-1)³.

It is a cyclic number.

It is not a de Polignac number, because 19906848001 - 2³ = 19906847993 is a prime.

It is a deceptive number, since it divides R_19906848000.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19906848041) 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, 28801 + ... + 201601.

It is an arithmetic number, because the mean of its divisors is an integer number (4976784001).

It is a Poulet number, since it divides 2^19906848000-1.

Almost surely, 2^19906848001 is an apocalyptic number.

19906848001 is the 115201-st pentagonal number.

It is an amenable number.

19906848001 is a deficient number, since it is larger than the sum of its proper divisors (288003).

19906848001 is a wasteful number, since it uses less digits than its factorization.

19906848001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288002.

The product of its (nonzero) digits is 124416, while the sum is 46.

The spelling of 19906848001 in words is "nineteen billion, nine hundred six million, eight hundred forty-eight thousand, one".