145548189 has 12 divisors (see below), whose sum is σ = 221301600. Its totient is φ = 91925064.

The previous prime is 145548173. The next prime is 145548191. The reversal of 145548189 is 981845541.

It is a happy number.

145548189 is a `hidden beast` number, since 14 + 554 + 8 + 1 + 89 = 666.

It is not a de Polignac number, because 145548189 - 2⁴ = 145548173 is a prime.

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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145548119) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 425409 + ... + 425750.

It is an arithmetic number, because the mean of its divisors is an integer number (18441800).

Almost surely, 2^145548189 is an apocalyptic number.

145548189 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

145548189 is a deficient number, since it is larger than the sum of its proper divisors (75753411).

145548189 is a wasteful number, since it uses less digits than its factorization.

145548189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851184 (or 851181 counting only the distinct ones).

The product of its digits is 230400, while the sum is 45.

The square root of 145548189 is about 12064.3354147669. The cubic root of 145548189 is about 526.0200142259.

The spelling of 145548189 in words is "one hundred forty-five million, five hundred forty-eight thousand, one hundred eighty-nine".