9719402872194 has 12 divisors (see below), whose sum is σ = 21058706223126. Its totient is φ = 3239800957392.

The previous prime is 9719402872171. The next prime is 9719402872213. The reversal of 9719402872194 is 4912782049179.

9719402872194 is a `hidden beast` number, since 9 + 7 + 1 + 9 + 402 + 8 + 7 + 219 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6887711558025 + 2831691314169 = 2624445^2 + 1682763^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 269983413099 + ... + 269983413134.

Almost surely, 2^{9719402872194} is an apocalyptic number.

9719402872194 is an abundant number, since it is smaller than the sum of its proper divisors (11339303350932).

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

9719402872194 is a wasteful number, since it uses less digits than its factorization.

9719402872194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539966826241 (or 539966826238 counting only the distinct ones).

The product of its (nonzero) digits is 18289152, while the sum is 63.

The spelling of 9719402872194 in words is "nine trillion, seven hundred nineteen billion, four hundred two million, eight hundred seventy-two thousand, one hundred ninety-four".