145169189 has 8 divisors (see below), whose sum is σ = 158811840. Its totient is φ = 131600800.

The previous prime is 145169159. The next prime is 145169191. The reversal of 145169189 is 981961541.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145169189 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145169159) 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, 14432 + ... + 22329.

It is an arithmetic number, because the mean of its divisors is an integer number (19851480).

Almost surely, 2^145169189 is an apocalyptic number.

It is an amenable number.

145169189 is a deficient number, since it is larger than the sum of its proper divisors (13642651).

145169189 is a wasteful number, since it uses less digits than its factorization.

145169189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37131.

The product of its digits is 77760, while the sum is 44.

The square root of 145169189 is about 12048.6177215480. The cubic root of 145169189 is about 525.5630409949.

The spelling of 145169189 in words is "one hundred forty-five million, one hundred sixty-nine thousand, one hundred eighty-nine".