196423994436 has 12 divisors (see below), whose sum is σ = 458322653712. Its totient is φ = 65474664808.

The previous prime is 196423994407. The next prime is 196423994467. The reversal of 196423994436 is 634499324691.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 196423994436.

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, 8184333090 + ... + 8184333113.

It is an arithmetic number, because the mean of its divisors is an integer number (38193554476).

Almost surely, 2^196423994436 is an apocalyptic number.

It is an amenable number.

196423994436 is an abundant number, since it is smaller than the sum of its proper divisors (261898659276).

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

196423994436 is a wasteful number, since it uses less digits than its factorization.

196423994436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16368666210 (or 16368666208 counting only the distinct ones).

The product of its digits is 30233088, while the sum is 60.

The spelling of 196423994436 in words is "one hundred ninety-six billion, four hundred twenty-three million, nine hundred ninety-four thousand, four hundred thirty-six".