196538 has 4 divisors (see below), whose sum is σ = 294810. Its totient is φ = 98268.

The previous prime is 196523. The next prime is 196541. The reversal of 196538 is 835691.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 835691 = 67 ⋅12473.

It can be written as a sum of positive squares in only one way, i.e., 196249 + 289 = 443^2 + 17^2 .

It is a Curzon number.

It is a plaindrome in base 7.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49133 + ... + 49136.

2¹⁹⁶⁵³⁸ is an apocalyptic number.

196538 is a deficient number, since it is larger than the sum of its proper divisors (98272).

196538 is an equidigital number, since it uses as much as digits as its factorization.

196538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98271.

The product of its digits is 6480, while the sum is 32.

The square root of 196538 is about 443.3260651033. The cubic root of 196538 is about 58.1409571944.

The spelling of 196538 in words is "one hundred ninety-six thousand, five hundred thirty-eight".