2190865223 has 2 divisors, whose sum is σ = 2190865224. Its totient is φ = 2190865222.

The previous prime is 2190865219. The next prime is 2190865249. The reversal of 2190865223 is 3225680912.

2190865223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2190865223 - 2² = 2190865219 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2190865273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1095432611 + 1095432612.

It is an arithmetic number, because the mean of its divisors is an integer number (1095432612).

Almost surely, 2^2190865223 is an apocalyptic number.

2190865223 is a deficient number, since it is larger than the sum of its proper divisors (1).

2190865223 is an equidigital number, since it uses as much as digits as its factorization.

2190865223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 2190865223 is about 46806.6792562771. The cubic root of 2190865223 is about 1298.7888568032.

The spelling of 2190865223 in words is "two billion, one hundred ninety million, eight hundred sixty-five thousand, two hundred twenty-three".