19841131420439 has 16 divisors (see below), whose sum is σ = 23302139904000. Its totient is φ = 16537304313504.

The previous prime is 19841131420433. The next prime is 19841131420469. The reversal of 19841131420439 is 93402413114891.

It is a cyclic number.

It is not a de Polignac number, because 19841131420439 - 2³⁶ = 19772411943703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19841131420433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22104599 + ... + 22984680.

It is an arithmetic number, because the mean of its divisors is an integer number (1456383744000).

Almost surely, 2^{19841131420439} is an apocalyptic number.

19841131420439 is a deficient number, since it is larger than the sum of its proper divisors (3461008483561).

19841131420439 is a wasteful number, since it uses less digits than its factorization.

19841131420439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45091022.

The product of its (nonzero) digits is 746496, while the sum is 50.

The spelling of 19841131420439 in words is "nineteen trillion, eight hundred forty-one billion, one hundred thirty-one million, four hundred twenty thousand, four hundred thirty-nine".