2166882451 has 2 divisors, whose sum is σ = 2166882452. Its totient is φ = 2166882450.

The previous prime is 2166882449. The next prime is 2166882469. The reversal of 2166882451 is 1542886612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2166882451 - 2¹ = 2166882449 is a prime.

Together with 2166882449, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 2166882398 and 2166882407.

It is not a weakly prime, because it can be changed into another prime (2166882491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1083441225 + 1083441226.

It is an arithmetic number, because the mean of its divisors is an integer number (1083441226).

Almost surely, 2^2166882451 is an apocalyptic number.

2166882451 is a deficient number, since it is larger than the sum of its proper divisors (1).

2166882451 is an equidigital number, since it uses as much as digits as its factorization.

2166882451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 184320, while the sum is 43.

The square root of 2166882451 is about 46549.7846504149. The cubic root of 2166882451 is about 1294.0323020108.

The spelling of 2166882451 in words is "two billion, one hundred sixty-six million, eight hundred eighty-two thousand, four hundred fifty-one".