196538738 has 16 divisors (see below), whose sum is σ = 326411424. Its totient is φ = 88001760.

The previous prime is 196538711. The next prime is 196538747. The reversal of 196538738 is 837835691.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65195 + ... + 68142.

It is an arithmetic number, because the mean of its divisors is an integer number (20400714).

Almost surely, 2^196538738 is an apocalyptic number.

196538738 is a deficient number, since it is larger than the sum of its proper divisors (129872686).

196538738 is a wasteful number, since it uses less digits than its factorization.

196538738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133417.

The product of its digits is 1088640, while the sum is 50.

The square root of 196538738 is about 14019.2274394847. The cubic root of 196538738 is about 581.4102996734.

The spelling of 196538738 in words is "one hundred ninety-six million, five hundred thirty-eight thousand, seven hundred thirty-eight".