2193918064 has 40 divisors (see below), whose sum is σ = 4624929680. Its totient is φ = 1002129408.

The previous prime is 2193918059. The next prime is 2193918173. The reversal of 2193918064 is 4608193912.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2193918064.

It is a congruent number.

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, 34194 + ... + 74545.

It is an arithmetic number, because the mean of its divisors is an integer number (115623242).

Almost surely, 2^2193918064 is an apocalyptic number.

It is an amenable number.

2193918064 is an abundant number, since it is smaller than the sum of its proper divisors (2431011616).

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

2193918064 is a wasteful number, since it uses less digits than its factorization.

2193918064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108857 (or 108851 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 2193918064 is about 46839.2790721634. The cubic root of 2193918064 is about 1299.3918386134.

The spelling of 2193918064 in words is "two billion, one hundred ninety-three million, nine hundred eighteen thousand, sixty-four".