19173676340 has 192 divisors, whose sum is σ = 52455997440. Its totient is φ = 5716707840.

The previous prime is 19173676267. The next prime is 19173676349. The reversal of 19173676340 is 4367637191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19173676349) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6603329 + ... + 6606231.

It is an arithmetic number, because the mean of its divisors is an integer number (273208320).

Almost surely, 2^19173676340 is an apocalyptic number.

19173676340 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 19173676340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26227998720).

19173676340 is an abundant number, since it is smaller than the sum of its proper divisors (33282321100).

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

19173676340 is a wasteful number, since it uses less digits than its factorization.

19173676340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3142 (or 3140 counting only the distinct ones).

The product of its (nonzero) digits is 571536, while the sum is 47.

The spelling of 19173676340 in words is "nineteen billion, one hundred seventy-three million, six hundred seventy-six thousand, three hundred forty".