190145 has 8 divisors (see below), whose sum is σ = 241704. Its totient is φ = 143104.

The previous prime is 190129. The next prime is 190147. The reversal of 190145 is 541091.

190145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 65536 + 124609 = 256^2 + 353^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 190145 - 2⁴ = 190129 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1034 + ... + 1203.

It is an arithmetic number, because the mean of its divisors is an integer number (30213).

2¹⁹⁰¹⁴⁵ is an apocalyptic number.

It is an amenable number.

190145 is a deficient number, since it is larger than the sum of its proper divisors (51559).

190145 is a wasteful number, since it uses less digits than its factorization.

190145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2259.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 190145 is about 436.0561890399. The cubic root of 190145 is about 57.5035914581.

The spelling of 190145 in words is "one hundred ninety thousand, one hundred forty-five".