194218549680 has 40 divisors (see below), whose sum is σ = 602077504752. Its totient is φ = 51791613184.

The previous prime is 194218549619. The next prime is 194218549729. The reversal of 194218549680 is 86945812491.

194218549680 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 194218549680.

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, 404621739 + ... + 404622218.

Almost surely, 2^194218549680 is an apocalyptic number.

194218549680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

194218549680 is an abundant number, since it is smaller than the sum of its proper divisors (407858955072).

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

194218549680 is a wasteful number, since it uses less digits than its factorization.

194218549680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809243973 (or 809243967 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 57.

The spelling of 194218549680 in words is "one hundred ninety-four billion, two hundred eighteen million, five hundred forty-nine thousand, six hundred eighty".