2019944649299 has 4 divisors (see below), whose sum is σ = 2019961488336. Its totient is φ = 2019927810264.

The previous prime is 2019944649287. The next prime is 2019944649329. The reversal of 2019944649299 is 9929464499102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2019944649299 - 2³⁶ = 1951225172563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2019944649799) 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, 8238284 + ... + 8479929.

It is an arithmetic number, because the mean of its divisors is an integer number (504990372084).

Almost surely, 2^{2019944649299} is an apocalyptic number.

2019944649299 is a deficient number, since it is larger than the sum of its proper divisors (16839037).

2019944649299 is a wasteful number, since it uses less digits than its factorization.

2019944649299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16839036.

The product of its (nonzero) digits is 90699264, while the sum is 68.

The spelling of 2019944649299 in words is "two trillion, nineteen billion, nine hundred forty-four million, six hundred forty-nine thousand, two hundred ninety-nine".