2197238766 has 16 divisors (see below), whose sum is σ = 4546011600. Its totient is φ = 707157248.

The previous prime is 2197238761. The next prime is 2197238777. The reversal of 2197238766 is 6678327912.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2197238761) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 6313731 + ... + 6314078.

It is an arithmetic number, because the mean of its divisors is an integer number (284125725).

Almost surely, 2^2197238766 is an apocalyptic number.

2197238766 is an abundant number, since it is smaller than the sum of its proper divisors (2348772834).

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

2197238766 is a wasteful number, since it uses less digits than its factorization.

2197238766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12627843.

The product of its digits is 1524096, while the sum is 51.

The square root of 2197238766 is about 46874.7135031245. The cubic root of 2197238766 is about 1300.0470921797.

The spelling of 2197238766 in words is "two billion, one hundred ninety-seven million, two hundred thirty-eight thousand, seven hundred sixty-six".