16019444180 has 12 divisors (see below), whose sum is σ = 33640832820. Its totient is φ = 6407777664.

The previous prime is 16019444101. The next prime is 16019444197. The reversal of 16019444180 is 8144491061.

It can be written as a sum of positive squares in 2 ways, for example, as 4816915216 + 11202528964 = 69404^2 + 105842^2 .

It is a super-2 number, since 2×16019444180² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 400486085 + ... + 400486124.

It is an arithmetic number, because the mean of its divisors is an integer number (2803402735).

Almost surely, 2^16019444180 is an apocalyptic number.

16019444180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16019444180 is an abundant number, since it is smaller than the sum of its proper divisors (17621388640).

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

16019444180 is a wasteful number, since it uses less digits than its factorization.

16019444180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800972218 (or 800972216 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 38.

The spelling of 16019444180 in words is "sixteen billion, nineteen million, four hundred forty-four thousand, one hundred eighty".