189017442860 has 48 divisors (see below), whose sum is σ = 397811100960. Its totient is φ = 75440609280.

The previous prime is 189017442839. The next prime is 189017442863. The reversal of 189017442860 is 68244710981.

It is a junction number, because it is equal to n+sod(n) for n = 189017442799 and 189017442808.

It is not an unprimeable number, because it can be changed into a prime (189017442863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18035942 + ... + 18046418.

It is an arithmetic number, because the mean of its divisors is an integer number (8287731270).

Almost surely, 2^189017442860 is an apocalyptic number.

189017442860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189017442860 is an abundant number, since it is smaller than the sum of its proper divisors (208793658100).

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

189017442860 is a wasteful number, since it uses less digits than its factorization.

189017442860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12386 (or 12384 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 50.

The spelling of 189017442860 in words is "one hundred eighty-nine billion, seventeen million, four hundred forty-two thousand, eight hundred sixty".