189208542 has 8 divisors (see below), whose sum is σ = 378417096. Its totient is φ = 63069512.

The previous prime is 189208541. The next prime is 189208567. The reversal of 189208542 is 245802981.

It is a sphenic number, since it is the product of 3 distinct primes.

189208542 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 189208542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189208541) 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 3 ways as a sum of consecutive naturals, for example, 15767373 + ... + 15767384.

It is an arithmetic number, because the mean of its divisors is an integer number (47302137).

Almost surely, 2^189208542 is an apocalyptic number.

189208542 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

189208542 is a wasteful number, since it uses less digits than its factorization.

189208542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31534762.

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 189208542 is about 13755.3095930263. The cubic root of 189208542 is about 574.0903494666.

The spelling of 189208542 in words is "one hundred eighty-nine million, two hundred eight thousand, five hundred forty-two".