195490 has 16 divisors (see below), whose sum is σ = 357048. Its totient is φ = 77056.

The previous prime is 195479. The next prime is 195493. The reversal of 195490 is 94591.

195490 is nontrivially palindromic in base 6.

It can be written as a sum of positive squares in 4 ways, for example, as 142129 + 53361 = 377^2 + 231^2 .

It is not an unprimeable number, because it can be changed into a prime (195493) by changing a digit.

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, 1044 + ... + 1216.

2¹⁹⁵⁴⁹⁰ is an apocalyptic number.

195490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

195490 is a deficient number, since it is larger than the sum of its proper divisors (161558).

195490 is a wasteful number, since it uses less digits than its factorization.

195490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 195490 is about 442.1425109622. The cubic root of 195490 is about 58.0374312482.

The spelling of 195490 in words is "one hundred ninety-five thousand, four hundred ninety".