2194981513208 has 32 divisors (see below), whose sum is σ = 4489813704960. Its totient is φ = 997701360480.

The previous prime is 2194981513187. The next prime is 2194981513223. The reversal of 2194981513208 is 8023151894912.

It is a Cunningham number, because it is equal to 1481547²-1.

It is a self number, because there is not a number n which added to its sum of digits gives 2194981513208.

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, 5740991 + ... + 6111377.

It is an arithmetic number, because the mean of its divisors is an integer number (140306678280).

Almost surely, 2^{2194981513208} is an apocalyptic number.

It is an amenable number.

2194981513208 is an abundant number, since it is smaller than the sum of its proper divisors (2294832191752).

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

2194981513208 is a wasteful number, since it uses less digits than its factorization.

2194981513208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437747 (or 437743 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 53.

The spelling of 2194981513208 in words is "two trillion, one hundred ninety-four billion, nine hundred eighty-one million, five hundred thirteen thousand, two hundred eight".