2163923 has 2 divisors, whose sum is σ = 2163924. Its totient is φ = 2163922.

The previous prime is 2163919. The next prime is 2163949. The reversal of 2163923 is 3293612.

It is an a-pointer prime, because the next prime (2163949) can be obtained adding 2163923 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2163923 - 2² = 2163919 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2163892 and 2163901.

It is not a weakly prime, because it can be changed into another prime (2163983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1081961 + 1081962.

It is an arithmetic number, because the mean of its divisors is an integer number (1081962).

2^2163923 is an apocalyptic number.

2163923 is a deficient number, since it is larger than the sum of its proper divisors (1).

2163923 is an equidigital number, since it uses as much as digits as its factorization.

2163923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 26.

The square root of 2163923 is about 1471.0278719317. The cubic root of 2163923 is about 129.3442919175.

The spelling of 2163923 in words is "two million, one hundred sixty-three thousand, nine hundred twenty-three".