189784830660 has 48 divisors (see below), whose sum is σ = 531419507136. Its totient is φ = 50607194752.

The previous prime is 189784830649. The next prime is 189784830667. The reversal of 189784830660 is 66038487981.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 189784830594 and 189784830603.

It is not an unprimeable number, because it can be changed into a prime (189784830667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1870762 + ... + 1969598.

It is an arithmetic number, because the mean of its divisors is an integer number (11071239732).

Almost surely, 2^189784830660 is an apocalyptic number.

189784830660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189784830660 is an abundant number, since it is smaller than the sum of its proper divisors (341634676476).

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

189784830660 is a wasteful number, since it uses less digits than its factorization.

189784830660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130852 (or 130850 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 60.

The spelling of 189784830660 in words is "one hundred eighty-nine billion, seven hundred eighty-four million, eight hundred thirty thousand, six hundred sixty".