1918184819 has 2 divisors, whose sum is σ = 1918184820. Its totient is φ = 1918184818.

The previous prime is 1918184771. The next prime is 1918184897. The reversal of 1918184819 is 9184818191.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1918184819 - 2²⁴ = 1901407603 is a prime.

It is a super-2 number, since 2×1918184819² = 7358865999684125522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1918184899) 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, 959092409 + 959092410.

It is an arithmetic number, because the mean of its divisors is an integer number (959092410).

Almost surely, 2^1918184819 is an apocalyptic number.

1918184819 is a deficient number, since it is larger than the sum of its proper divisors (1).

1918184819 is an equidigital number, since it uses as much as digits as its factorization.

1918184819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 165888, while the sum is 50.

The square root of 1918184819 is about 43797.0868780105. The cubic root of 1918184819 is about 1242.5011990645.

The spelling of 1918184819 in words is "one billion, nine hundred eighteen million, one hundred eighty-four thousand, eight hundred nineteen".