196191138005 has 8 divisors (see below), whose sum is σ = 239871429432. Its totient is φ = 153991534528.

The previous prime is 196191137981. The next prime is 196191138041. The reversal of 196191138005 is 500831191691.

It can be written as a sum of positive squares in 4 ways, for example, as 37907311204 + 158283826801 = 194698^2 + 397849^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 196191138005 - 2³² = 191896170709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370171694 + ... + 370172223.

It is an arithmetic number, because the mean of its divisors is an integer number (29983928679).

Almost surely, 2^196191138005 is an apocalyptic number.

It is an amenable number.

196191138005 is a deficient number, since it is larger than the sum of its proper divisors (43680291427).

196191138005 is an equidigital number, since it uses as much as digits as its factorization.

196191138005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740343975.

The product of its (nonzero) digits is 58320, while the sum is 44.

The spelling of 196191138005 in words is "one hundred ninety-six billion, one hundred ninety-one million, one hundred thirty-eight thousand, five".