19239631892 has 12 divisors (see below), whose sum is σ = 36259306356. Its totient is φ = 8879830080.

The previous prime is 19239631891. The next prime is 19239631909. The reversal of 19239631892 is 29813693291.

It can be written as a sum of positive squares in 2 ways, for example, as 2132038276 + 17107593616 = 46174^2 + 130796^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19239631891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184996409 + ... + 184996512.

It is an arithmetic number, because the mean of its divisors is an integer number (3021608863).

Almost surely, 2^19239631892 is an apocalyptic number.

It is an amenable number.

19239631892 is a deficient number, since it is larger than the sum of its proper divisors (17019674464).

19239631892 is a wasteful number, since it uses less digits than its factorization.

19239631892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369992938 (or 369992936 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 53.

The spelling of 19239631892 in words is "nineteen billion, two hundred thirty-nine million, six hundred thirty-one thousand, eight hundred ninety-two".