2194504685 has 4 divisors (see below), whose sum is σ = 2633405628. Its totient is φ = 1755603744.

The previous prime is 2194504679. The next prime is 2194504723. The reversal of 2194504685 is 5864054912.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 623650729 + 1570853956 = 24973^2 + 39634^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2194504685 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219450464 + ... + 219450473.

It is an arithmetic number, because the mean of its divisors is an integer number (658351407).

Almost surely, 2^2194504685 is an apocalyptic number.

It is an amenable number.

2194504685 is a deficient number, since it is larger than the sum of its proper divisors (438900943).

2194504685 is an equidigital number, since it uses as much as digits as its factorization.

2194504685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438900942.

The product of its (nonzero) digits is 345600, while the sum is 44.

The square root of 2194504685 is about 46845.5407162731. The cubic root of 2194504685 is about 1299.5076409648.

The spelling of 2194504685 in words is "two billion, one hundred ninety-four million, five hundred four thousand, six hundred eighty-five".