19340889208 has 8 divisors (see below), whose sum is σ = 36264167280. Its totient is φ = 9670444600.

The previous prime is 19340889193. The next prime is 19340889223. The reversal of 19340889208 is 80298804391.

It is an interprime number because it is at equal distance from previous prime (19340889193) and next prime (19340889223).

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×19340889208² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1208805568 + ... + 1208805583.

It is an arithmetic number, because the mean of its divisors is an integer number (4533020910).

Almost surely, 2^19340889208 is an apocalyptic number.

It is an amenable number.

19340889208 is a deficient number, since it is larger than the sum of its proper divisors (16923278072).

19340889208 is a wasteful number, since it uses less digits than its factorization.

19340889208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2417611157 (or 2417611153 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 52.

The spelling of 19340889208 in words is "nineteen billion, three hundred forty million, eight hundred eighty-nine thousand, two hundred eight".