2189612545694 has 32 divisors (see below), whose sum is σ = 4111471846080. Its totient is φ = 852749710848.

The previous prime is 2189612545663. The next prime is 2189612545717. The reversal of 2189612545694 is 4965452169812.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158614697 + ... + 158628500.

It is an arithmetic number, because the mean of its divisors is an integer number (128483495190).

Almost surely, 2^{2189612545694} is an apocalyptic number.

2189612545694 is a deficient number, since it is larger than the sum of its proper divisors (1921859300386).

2189612545694 is a wasteful number, since it uses less digits than its factorization.

2189612545694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317243252.

The product of its digits is 37324800, while the sum is 62.

The spelling of 2189612545694 in words is "two trillion, one hundred eighty-nine billion, six hundred twelve million, five hundred forty-five thousand, six hundred ninety-four".