618874019 has 2 divisors, whose sum is σ = 618874020. Its totient is φ = 618874018.

The previous prime is 618873971. The next prime is 618874021. The reversal of 618874019 is 910478816.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 618874019 - 2²⁸ = 350438563 is a prime.

It is a super-2 number, since 2×618874019² = 766010102786424722, which contains 22 as substring.

Together with 618874021, 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 (618874079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309437009 + 309437010.

It is an arithmetic number, because the mean of its divisors is an integer number (309437010).

Almost surely, 2^618874019 is an apocalyptic number.

618874019 is a deficient number, since it is larger than the sum of its proper divisors (1).

618874019 is an equidigital number, since it uses as much as digits as its factorization.

618874019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 44.

The square root of 618874019 is about 24877.1786784595. The cubic root of 618874019 is about 852.1853886770.

The spelling of 618874019 in words is "six hundred eighteen million, eight hundred seventy-four thousand, nineteen".