19218543060 has 96 divisors (see below), whose sum is σ = 54922250880. Its totient is φ = 5019535872.

The previous prime is 19218543059. The next prime is 19218543077. The reversal of 19218543060 is 6034581291.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1944411 + ... + 1954269.

It is an arithmetic number, because the mean of its divisors is an integer number (572106780).

Almost surely, 2^19218543060 is an apocalyptic number.

19218543060 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 19218543060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27461125440).

19218543060 is an abundant number, since it is smaller than the sum of its proper divisors (35703707820).

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

19218543060 is a wasteful number, since it uses less digits than its factorization.

19218543060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10537 (or 10535 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The spelling of 19218543060 in words is "nineteen billion, two hundred eighteen million, five hundred forty-three thousand, sixty".