190345 has 4 divisors (see below), whose sum is σ = 228420. Its totient is φ = 152272.

The previous prime is 190339. The next prime is 190357. The reversal of 190345 is 543091.

190345 = 308² + 309².

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 543091 = 53 ⋅10247.

It can be written as a sum of positive squares in 2 ways, for example, as 94864 + 95481 = 308^2 + 309^2 .

It is a cyclic number.

It is not a de Polignac number, because 190345 - 2⁵ = 190313 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, 19030 + ... + 19039.

It is an arithmetic number, because the mean of its divisors is an integer number (57105).

2¹⁹⁰³⁴⁵ is an apocalyptic number.

190345 is the 309-th centered square number.

It is an amenable number.

190345 is a deficient number, since it is larger than the sum of its proper divisors (38075).

190345 is an equidigital number, since it uses as much as digits as its factorization.

190345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38074.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 190345 is about 436.2854570118. The cubic root of 190345 is about 57.5237457060.

It can be divided in two parts, 190 and 345, that added together give a palindrome (535).

The spelling of 190345 in words is "one hundred ninety thousand, three hundred forty-five".