196475451138 has 12 divisors (see below), whose sum is σ = 425696810838. Its totient is φ = 65491817040.

The previous prime is 196475451089. The next prime is 196475451163. The reversal of 196475451138 is 831154574691.

196475451138 is a `hidden beast` number, since 1 + 9 + 6 + 47 + 54 + 511 + 38 = 666.

It can be written as a sum of positive squares in only one way, i.e., 157746391929 + 38729059209 = 397173^2 + 196797^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5457651403 + ... + 5457651438.

Almost surely, 2^196475451138 is an apocalyptic number.

196475451138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

196475451138 is an abundant number, since it is smaller than the sum of its proper divisors (229221359700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

196475451138 is a wasteful number, since it uses less digits than its factorization.

196475451138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10915302849 (or 10915302846 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 54.

The spelling of 196475451138 in words is "one hundred ninety-six billion, four hundred seventy-five million, four hundred fifty-one thousand, one hundred thirty-eight".