19834720992 has 96 divisors (see below), whose sum is σ = 57946291200. Its totient is φ = 6600714624.

The previous prime is 19834720991. The next prime is 19834720993. The reversal of 19834720992 is 29902743891.

19834720992 is a `hidden beast` number, since 1 + 9 + 8 + 347 + 209 + 92 = 666.

It is an interprime number because it is at equal distance from previous prime (19834720991) and next prime (19834720993).

It is a tau number, because it is divible by the number of its divisors (96).

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 (19834720991) 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, 516273 + ... + 553359.

It is an arithmetic number, because the mean of its divisors is an integer number (603607200).

Almost surely, 2^19834720992 is an apocalyptic number.

19834720992 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 19834720992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28973145600).

19834720992 is an abundant number, since it is smaller than the sum of its proper divisors (38111570208).

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

19834720992 is a wasteful number, since it uses less digits than its factorization.

19834720992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37725 (or 37711 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

The spelling of 19834720992 in words is "nineteen billion, eight hundred thirty-four million, seven hundred twenty thousand, nine hundred ninety-two".