19431424837 has 16 divisors (see below), whose sum is σ = 21923020800. Its totient is φ = 17070197040.

The previous prime is 19431424829. The next prime is 19431424891. The reversal of 19431424837 is 73842413491.

It is a cyclic number.

It is not a de Polignac number, because 19431424837 - 2³ = 19431424829 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 (19431424937) 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, 197037 + ... + 278722.

It is an arithmetic number, because the mean of its divisors is an integer number (1370188800).

Almost surely, 2^19431424837 is an apocalyptic number.

It is an amenable number.

19431424837 is a deficient number, since it is larger than the sum of its proper divisors (2491595963).

19431424837 is a wasteful number, since it uses less digits than its factorization.

19431424837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475896.

The product of its digits is 580608, while the sum is 46.

The spelling of 19431424837 in words is "nineteen billion, four hundred thirty-one million, four hundred twenty-four thousand, eight hundred thirty-seven".