1618453427 has 2 divisors, whose sum is σ = 1618453428. Its totient is φ = 1618453426.

The previous prime is 1618453423. The next prime is 1618453429. The reversal of 1618453427 is 7243548161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1618453427 - 2² = 1618453423 is a prime.

Together with 1618453429, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1618453423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 809226713 + 809226714.

It is an arithmetic number, because the mean of its divisors is an integer number (809226714).

Almost surely, 2^1618453427 is an apocalyptic number.

1618453427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1618453427 is an equidigital number, since it uses as much as digits as its factorization.

1618453427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161280, while the sum is 41.

The square root of 1618453427 is about 40230.0065498379. The cubic root of 1618453427 is about 1174.0864308477.

The spelling of 1618453427 in words is "one billion, six hundred eighteen million, four hundred fifty-three thousand, four hundred twenty-seven".