1818294019 has 2 divisors, whose sum is σ = 1818294020. Its totient is φ = 1818294018.

The previous prime is 1818294013. The next prime is 1818294061. The reversal of 1818294019 is 9104928181.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (9104928181) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1818294019 - 2⁵ = 1818293987 is a prime.

It is a super-2 number, since 2×1818294019² = 6612386279062344722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1818294013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 909147009 + 909147010.

It is an arithmetic number, because the mean of its divisors is an integer number (909147010).

Almost surely, 2^1818294019 is an apocalyptic number.

1818294019 is a deficient number, since it is larger than the sum of its proper divisors (1).

1818294019 is an equidigital number, since it uses as much as digits as its factorization.

1818294019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 43.

The square root of 1818294019 is about 42641.4589220397. The cubic root of 1818294019 is about 1220.5475502836.

The spelling of 1818294019 in words is "one billion, eight hundred eighteen million, two hundred ninety-four thousand, nineteen".