189908522 has 8 divisors (see below), whose sum is σ = 287525376. Its totient is φ = 94066732.

The previous prime is 189908519. The next prime is 189908527. The reversal of 189908522 is 225809981.

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

It is not an unprimeable number, because it can be changed into a prime (189908527) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 443498 + ... + 443925.

It is an arithmetic number, because the mean of its divisors is an integer number (35940672).

Almost surely, 2^189908522 is an apocalyptic number.

189908522 is a deficient number, since it is larger than the sum of its proper divisors (97616854).

189908522 is a wasteful number, since it uses less digits than its factorization.

189908522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887532.

The product of its (nonzero) digits is 103680, while the sum is 44.

The square root of 189908522 is about 13780.7300967692. The cubic root of 189908522 is about 574.7974303454.

The spelling of 189908522 in words is "one hundred eighty-nine million, nine hundred eight thousand, five hundred twenty-two".