196138 has 8 divisors (see below), whose sum is σ = 296100. Its totient is φ = 97440.

The previous prime is 196117. The next prime is 196139. The reversal of 196138 is 831691.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 187489 + 8649 = 433^2 + 93^2 .

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

It is a plaindrome in base 7.

It is not an unprimeable number, because it can be changed into a prime (196139) 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 3 ways as a sum of consecutive naturals, for example, 388 + ... + 736.

2¹⁹⁶¹³⁸ is an apocalyptic number.

196138 is a deficient number, since it is larger than the sum of its proper divisors (99962).

196138 is a wasteful number, since it uses less digits than its factorization.

196138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632.

The product of its digits is 1296, while the sum is 28.

The square root of 196138 is about 442.8747001128. The cubic root of 196138 is about 58.1014870018.

The spelling of 196138 in words is "one hundred ninety-six thousand, one hundred thirty-eight".