190745 has 4 divisors (see below), whose sum is σ = 228900. Its totient is φ = 152592.

The previous prime is 190717. The next prime is 190753. The reversal of 190745 is 547091.

190745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 547091 = 107 ⋅5113.

It can be written as a sum of positive squares in 2 ways, for example, as 126736 + 64009 = 356^2 + 253^2 .

It is a cyclic number.

It is not a de Polignac number, because 190745 - 2¹² = 186649 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19070 + ... + 19079.

It is an arithmetic number, because the mean of its divisors is an integer number (57225).

2¹⁹⁰⁷⁴⁵ is an apocalyptic number.

It is an amenable number.

190745 is a deficient number, since it is larger than the sum of its proper divisors (38155).

190745 is an equidigital number, since it uses as much as digits as its factorization.

190745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38154.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 190745 is about 436.7436318940. The cubic root of 190745 is about 57.5640118881.

The spelling of 190745 in words is "one hundred ninety thousand, seven hundred forty-five".