189754218 has 16 divisors (see below), whose sum is σ = 421676160. Its totient is φ = 63251388.

The previous prime is 189754171. The next prime is 189754219. The reversal of 189754218 is 812457981.

189754218 is a `hidden beast` number, since 1 + 8 + 97 + 542 + 18 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (189754219) 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 7 ways as a sum of consecutive naturals, for example, 1756930 + ... + 1757037.

It is an arithmetic number, because the mean of its divisors is an integer number (26354760).

Almost surely, 2^189754218 is an apocalyptic number.

189754218 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

189754218 is an abundant number, since it is smaller than the sum of its proper divisors (231921942).

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

189754218 is a wasteful number, since it uses less digits than its factorization.

189754218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3513978 (or 3513972 counting only the distinct ones).

The product of its digits is 161280, while the sum is 45.

The square root of 189754218 is about 13775.1304168055. The cubic root of 189754218 is about 574.6417105032.

The spelling of 189754218 in words is "one hundred eighty-nine million, seven hundred fifty-four thousand, two hundred eighteen".