1818244037 has 2 divisors, whose sum is σ = 1818244038. Its totient is φ = 1818244036.

The previous prime is 1818244003. The next prime is 1818244039. The reversal of 1818244037 is 7304428181.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1353798436 + 464445601 = 36794^2 + 21551^2 .

It is an emirp because it is prime and its reverse (7304428181) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1818244037 - 2⁸ = 1818243781 is a prime.

It is a super-2 number, since 2×1818244037² = 6612022756172114738, which contains 22 as substring.

Together with 1818244039, 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 (1818244039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 909122018 + 909122019.

It is an arithmetic number, because the mean of its divisors is an integer number (909122019).

Almost surely, 2^1818244037 is an apocalyptic number.

It is an amenable number.

1818244037 is a deficient number, since it is larger than the sum of its proper divisors (1).

1818244037 is an equidigital number, since it uses as much as digits as its factorization.

1818244037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 1818244037 is about 42640.8728451940. The cubic root of 1818244037 is about 1220.5363665466.

The spelling of 1818244037 in words is "one billion, eight hundred eighteen million, two hundred forty-four thousand, thirty-seven".