2194002693668 has 6 divisors (see below), whose sum is σ = 3839504713926. Its totient is φ = 1097001346832.

The previous prime is 2194002693637. The next prime is 2194002693683. The reversal of 2194002693668 is 8663962004912.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1254126734884 + 939875958784 = 1119878^2 + 969472^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274250336705 + ... + 274250336712.

It is an arithmetic number, because the mean of its divisors is an integer number (639917452321).

Almost surely, 2^{2194002693668} is an apocalyptic number.

It is an amenable number.

2194002693668 is a deficient number, since it is larger than the sum of its proper divisors (1645502020258).

2194002693668 is a wasteful number, since it uses less digits than its factorization.

2194002693668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548500673421 (or 548500673419 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 56.

The spelling of 2194002693668 in words is "two trillion, one hundred ninety-four billion, two million, six hundred ninety-three thousand, six hundred sixty-eight".