190045 has 8 divisors (see below), whose sum is σ = 230400. Its totient is φ = 150480.

The previous prime is 190031. The next prime is 190051. The reversal of 190045 is 540091.

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

It is not a de Polignac number, because 190045 - 2¹⁵ = 157277 is a prime.

It is a super-2 number, since 2×190045² = 72234204050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 856 + ... + 1054.

It is an arithmetic number, because the mean of its divisors is an integer number (28800).

2¹⁹⁰⁰⁴⁵ is an apocalyptic number.

It is an amenable number.

190045 is a deficient number, since it is larger than the sum of its proper divisors (40355).

190045 is a wasteful number, since it uses less digits than its factorization.

190045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 190045 is about 435.9415098382. The cubic root of 190045 is about 57.4935090341.

The spelling of 190045 in words is "one hundred ninety thousand, forty-five".