19868071392 has 240 divisors, whose sum is σ = 66240210960. Its totient is φ = 5791315968.

The previous prime is 19868071367. The next prime is 19868071397. The reversal of 19868071392 is 29317086891.

19868071392 is a `hidden beast` number, since 198 + 68 + 0 + 7 + 1 + 392 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19868071397) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 624708 + ... + 655740.

It is an arithmetic number, because the mean of its divisors is an integer number (276000879).

Almost surely, 2^19868071392 is an apocalyptic number.

19868071392 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 19868071392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33120105480).

19868071392 is an abundant number, since it is smaller than the sum of its proper divisors (46372139568).

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

19868071392 is a wasteful number, since it uses less digits than its factorization.

19868071392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31087 (or 31070 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 54.

It can be divided in two parts, 198680 and 71392, that added together give a palindrome (270072).

The spelling of 19868071392 in words is "nineteen billion, eight hundred sixty-eight million, seventy-one thousand, three hundred ninety-two".