19904143392 has 288 divisors, whose sum is σ = 69185067840. Its totient is φ = 5547709440.

The previous prime is 19904143387. The next prime is 19904143403. The reversal of 19904143392 is 29334140991.

19904143392 is a `hidden beast` number, since 1 + 9 + 90 + 41 + 433 + 92 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1730043 + ... + 1741509.

It is an arithmetic number, because the mean of its divisors is an integer number (240225930).

Almost surely, 2^19904143392 is an apocalyptic number.

19904143392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19904143392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34592533920).

19904143392 is an abundant number, since it is smaller than the sum of its proper divisors (49280924448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19904143392 is a wasteful number, since it uses less digits than its factorization.

19904143392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11541 (or 11520 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The spelling of 19904143392 in words is "nineteen billion, nine hundred four million, one hundred forty-three thousand, three hundred ninety-two".