196405534398 has 8 divisors (see below), whose sum is σ = 392811068808. Its totient is φ = 65468511464.

The previous prime is 196405534327. The next prime is 196405534421. The reversal of 196405534398 is 893435504691.

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

196405534398 is an admirable number.

It is a super-2 number, since 2×196405534398² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16367127861 + ... + 16367127872.

It is an arithmetic number, because the mean of its divisors is an integer number (49101383601).

Almost surely, 2^196405534398 is an apocalyptic number.

196405534398 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

196405534398 is a wasteful number, since it uses less digits than its factorization.

196405534398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32734255738.

The product of its (nonzero) digits is 13996800, while the sum is 57.

The spelling of 196405534398 in words is "one hundred ninety-six billion, four hundred five million, five hundred thirty-four thousand, three hundred ninety-eight".