1822666451 has 2 divisors, whose sum is σ = 1822666452. Its totient is φ = 1822666450.

The previous prime is 1822666429. The next prime is 1822666453. The reversal of 1822666451 is 1546662281.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1822666451 is a prime.

It is a super-2 number, since 2×1822666451² = 6644225983201870802, which contains 22 as substring.

Together with 1822666453, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1822666399 and 1822666408.

It is not a weakly prime, because it can be changed into another prime (1822666453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 911333225 + 911333226.

It is an arithmetic number, because the mean of its divisors is an integer number (911333226).

Almost surely, 2^1822666451 is an apocalyptic number.

1822666451 is a deficient number, since it is larger than the sum of its proper divisors (1).

1822666451 is an equidigital number, since it uses as much as digits as its factorization.

1822666451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 138240, while the sum is 41.

The square root of 1822666451 is about 42692.6978650916. The cubic root of 1822666451 is about 1221.5251129634.

The spelling of 1822666451 in words is "one billion, eight hundred twenty-two million, six hundred sixty-six thousand, four hundred fifty-one".