189515343660 has 96 divisors (see below), whose sum is σ = 534203523840. Its totient is φ = 50198683392.

The previous prime is 189515343659. The next prime is 189515343683. The reversal of 189515343660 is 66343515981.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21306174 + ... + 21315066.

It is an arithmetic number, because the mean of its divisors is an integer number (5564620040).

Almost surely, 2^189515343660 is an apocalyptic number.

189515343660 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 189515343660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267101761920).

189515343660 is an abundant number, since it is smaller than the sum of its proper divisors (344688180180).

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

189515343660 is a wasteful number, since it uses less digits than its factorization.

189515343660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11247 (or 11245 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 51.

The spelling of 189515343660 in words is "one hundred eighty-nine billion, five hundred fifteen million, three hundred forty-three thousand, six hundred sixty".