19318770108 has 96 divisors (see below), whose sum is σ = 54735582720. Its totient is φ = 5843819520.

The previous prime is 19318770101. The next prime is 19318770169. The reversal of 19318770108 is 80107781391.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19318770101) 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, 671385 + ... + 699567.

It is an arithmetic number, because the mean of its divisors is an integer number (570162320).

Almost surely, 2^19318770108 is an apocalyptic number.

19318770108 is a gapful number since it is divisible by the number (18) 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 19318770108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27367791360).

19318770108 is an abundant number, since it is smaller than the sum of its proper divisors (35416812612).

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

19318770108 is a wasteful number, since it uses less digits than its factorization.

19318770108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28784 (or 28776 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 45.

The spelling of 19318770108 in words is "nineteen billion, three hundred eighteen million, seven hundred seventy thousand, one hundred eight".