196431316138 has 8 divisors (see below), whose sum is σ = 307457712288. Its totient is φ = 93945412044.

The previous prime is 196431316121. The next prime is 196431316153. The reversal of 196431316138 is 831613134691.

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

It is a Harshad number since it is a multiple of its sum of digits (46), and also a Moran number because the ratio is a prime number: 4270246003 = 196431316138 / (1 + 9 + 6 + 4 + 3 + 1 + 3 + 1 + 6 + 1 + 3 + 8).

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 3 ways as a sum of consecutive naturals, for example, 2135122956 + ... + 2135123047.

It is an arithmetic number, because the mean of its divisors is an integer number (38432214036).

Almost surely, 2^196431316138 is an apocalyptic number.

196431316138 is a deficient number, since it is larger than the sum of its proper divisors (111026396150).

196431316138 is a wasteful number, since it uses less digits than its factorization.

196431316138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4270246028.

The product of its digits is 279936, while the sum is 46.

The spelling of 196431316138 in words is "one hundred ninety-six billion, four hundred thirty-one million, three hundred sixteen thousand, one hundred thirty-eight".