189412140 has 48 divisors (see below), whose sum is σ = 558270720. Its totient is φ = 47851200.

The previous prime is 189412133. The next prime is 189412163. The reversal of 189412140 is 41214981.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 189412098 and 189412107.

It is an unprimeable number.

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, 81936 + ... + 84215.

It is an arithmetic number, because the mean of its divisors is an integer number (11630640).

Almost surely, 2^189412140 is an apocalyptic number.

189412140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189412140 is an abundant number, since it is smaller than the sum of its proper divisors (368858580).

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

189412140 is a wasteful number, since it uses less digits than its factorization.

189412140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166182 (or 166180 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 189412140 is about 13762.7083090502. The cubic root of 189412140 is about 574.2961924420.

The spelling of 189412140 in words is "one hundred eighty-nine million, four hundred twelve thousand, one hundred forty".