19341680640 has 448 divisors, whose sum is σ = 67264141824. Its totient is φ = 4726980608.

The previous prime is 19341680639. The next prime is 19341680641. The reversal of 19341680640 is 4608614391.

It is an interprime number because it is at equal distance from previous prime (19341680639) and next prime (19341680641).

It is a junction number, because it is equal to n+sod(n) for n = 19341680592 and 19341680601.

It is not an unprimeable number, because it can be changed into a prime (19341680641) 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, 98181022 + ... + 98181218.

Almost surely, 2^19341680640 is an apocalyptic number.

19341680640 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 19341680640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33632070912).

19341680640 is an abundant number, since it is smaller than the sum of its proper divisors (47922461184).

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

19341680640 is a wasteful number, since it uses less digits than its factorization.

19341680640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295 (or 271 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The spelling of 19341680640 in words is "nineteen billion, three hundred forty-one million, six hundred eighty thousand, six hundred forty".