2019203919 has 12 divisors (see below), whose sum is σ = 2920970416. Its totient is φ = 1344131712.

The previous prime is 2019203881. The next prime is 2019203947. The reversal of 2019203919 is 9193029102.

It is a happy number.

It is not a de Polignac number, because 2019203919 - 2¹³ = 2019195727 is a prime.

It is a super-2 number, since 2×2019203919² = 8154368933009917122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2019203819) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 160627 + ... + 172740.

Almost surely, 2^2019203919 is an apocalyptic number.

2019203919 is a deficient number, since it is larger than the sum of its proper divisors (901766497).

2019203919 is a wasteful number, since it uses less digits than its factorization.

2019203919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334046 (or 334043 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 36.

The square root of 2019203919 is about 44935.5529508651. The cubic root of 2019203919 is about 1263.9407817471.

The spelling of 2019203919 in words is "two billion, nineteen million, two hundred three thousand, nine hundred nineteen".