2261786785 has 8 divisors (see below), whose sum is σ = 2740495680. Its totient is φ = 1791861744.

The previous prime is 2261786783. The next prime is 2261786789. The reversal of 2261786785 is 5876871622.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2261786785 - 2¹ = 2261786783 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2261786783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2195395 + ... + 2196424.

It is an arithmetic number, because the mean of its divisors is an integer number (342561960).

Almost surely, 2^2261786785 is an apocalyptic number.

It is an amenable number.

2261786785 is a deficient number, since it is larger than the sum of its proper divisors (478708895).

2261786785 is a wasteful number, since it uses less digits than its factorization.

2261786785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4391927.

The product of its digits is 2257920, while the sum is 52.

The square root of 2261786785 is about 47558.2462355373. The cubic root of 2261786785 is about 1312.6548698280.

The spelling of 2261786785 in words is "two billion, two hundred sixty-one million, seven hundred eighty-six thousand, seven hundred eighty-five".