189746685100 has 72 divisors (see below), whose sum is σ = 474006849120. Its totient is φ = 64581112320.

The previous prime is 189746685097. The next prime is 189746685109. The reversal of 189746685100 is 1586647981.

It is not an unprimeable number, because it can be changed into a prime (189746685109) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 893395 + ... + 1085194.

It is an arithmetic number, because the mean of its divisors is an integer number (6583428460).

Almost surely, 2^189746685100 is an apocalyptic number.

189746685100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189746685100 is an abundant number, since it is smaller than the sum of its proper divisors (284260164020).

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

189746685100 is a wasteful number, since it uses less digits than its factorization.

189746685100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1978747 (or 1978740 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 55.

The spelling of 189746685100 in words is "one hundred eighty-nine billion, seven hundred forty-six million, six hundred eighty-five thousand, one hundred".