2211785493 has 12 divisors (see below), whose sum is σ = 3132726240. Its totient is φ = 1387786432.

The previous prime is 2211785483. The next prime is 2211785503. The reversal of 2211785493 is 3945871122.

It is an interprime number because it is at equal distance from previous prime (2211785483) and next prime (2211785503).

It is not a de Polignac number, because 2211785493 - 2⁸ = 2211785237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211785423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1274673 + ... + 1276406.

It is an arithmetic number, because the mean of its divisors is an integer number (261060520).

Almost surely, 2^2211785493 is an apocalyptic number.

It is an amenable number.

2211785493 is a deficient number, since it is larger than the sum of its proper divisors (920940747).

2211785493 is a wasteful number, since it uses less digits than its factorization.

2211785493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2551116 (or 2551099 counting only the distinct ones).

The product of its digits is 120960, while the sum is 42.

The square root of 2211785493 is about 47029.6235685552. The cubic root of 2211785493 is about 1302.9097531316.

The spelling of 2211785493 in words is "two billion, two hundred eleven million, seven hundred eighty-five thousand, four hundred ninety-three".