2019243842001 has 15 divisors (see below), whose sum is σ = 3016420399531. Its totient is φ = 1346154035328.

The previous prime is 2019243841963. The next prime is 2019243842009. The reversal of 2019243842001 is 1002483429102.

The square root of 2019243842001 is 1421001.

It is a perfect power (a square), and thus also a powerful number.

2019243842001 is a `hidden beast` number, since 2 + 0 + 19 + 2 + 438 + 4 + 200 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1808893192401 + 210350649600 = 1344951^2 + 458640^2 .

It is not a de Polignac number, because 2019243842001 - 2¹³ = 2019243833809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2019243842009) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 12710065 + ... + 12867953.

Almost surely, 2^{2019243842001} is an apocalyptic number.

2019243842001 is the 1421001-st square number.

2019243842001 is the 710501-st centered octagonal number.

It is an amenable number.

2019243842001 is a deficient number, since it is larger than the sum of its proper divisors (997176557530).

2019243842001 is an frugal number, since it uses more digits than its factorization.

2019243842001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315790 (or 157892 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

Multiplying 2019243842001 by its sum of digits (36), we get a square (72692778312036 = 8526006²).

The spelling of 2019243842001 in words is "two trillion, nineteen billion, two hundred forty-three million, eight hundred forty-two thousand, one".