19429486849340 has 96 divisors (see below), whose sum is σ = 42921511041024. Its totient is φ = 7380338918400.

The previous prime is 19429486849327. The next prime is 19429486849343. The reversal of 19429486849340 is 4394868492491.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19429486849343) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4511732 + ... + 7695108.

It is an arithmetic number, because the mean of its divisors is an integer number (447099073344).

Almost surely, 2^{19429486849340} is an apocalyptic number.

19429486849340 is a gapful number since it is divisible by the number (10) 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 19429486849340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21460755520512).

19429486849340 is an abundant number, since it is smaller than the sum of its proper divisors (23492024191684).

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

19429486849340 is a wasteful number, since it uses less digits than its factorization.

19429486849340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3183627 (or 3183625 counting only the distinct ones).

The product of its (nonzero) digits is 429981696, while the sum is 71.

The spelling of 19429486849340 in words is "nineteen trillion, four hundred twenty-nine billion, four hundred eighty-six million, eight hundred forty-nine thousand, three hundred forty".