1868449127 has 2 divisors, whose sum is σ = 1868449128. Its totient is φ = 1868449126.

The previous prime is 1868449109. The next prime is 1868449129. The reversal of 1868449127 is 7219448681.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1868449127 - 2⁸ = 1868448871 is a prime.

It is a super-2 number, since 2×1868449127² = 6982204280374124258, which contains 22 as substring.

Together with 1868449129, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1868449129) 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 as a sum of consecutive naturals, namely, 934224563 + 934224564.

It is an arithmetic number, because the mean of its divisors is an integer number (934224564).

Almost surely, 2^1868449127 is an apocalyptic number.

1868449127 is a deficient number, since it is larger than the sum of its proper divisors (1).

1868449127 is an equidigital number, since it uses as much as digits as its factorization.

1868449127 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 774144, while the sum is 50.

The square root of 1868449127 is about 43225.5610374232. The cubic root of 1868449127 is about 1231.6682866067.

The spelling of 1868449127 in words is "one billion, eight hundred sixty-eight million, four hundred forty-nine thousand, one hundred twenty-seven".