189800148 has 24 divisors (see below), whose sum is σ = 444824352. Its totient is φ = 62987104.

The previous prime is 189800141. The next prime is 189800159. The reversal of 189800148 is 841008981.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189800141) 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 7 ways as a sum of consecutive naturals, for example, 32115 + ... + 37562.

It is an arithmetic number, because the mean of its divisors is an integer number (18534348).

Almost surely, 2^189800148 is an apocalyptic number.

It is an amenable number.

189800148 is an abundant number, since it is smaller than the sum of its proper divisors (255024204).

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

189800148 is a wasteful number, since it uses less digits than its factorization.

189800148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69911 (or 69909 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 39.

The square root of 189800148 is about 13776.7974507866. The cubic root of 189800148 is about 574.6880707631.

The spelling of 189800148 in words is "one hundred eighty-nine million, eight hundred thousand, one hundred forty-eight".