22018037 has 2 divisors, whose sum is σ = 22018038. Its totient is φ = 22018036.

The previous prime is 22017973. The next prime is 22018039. The reversal of 22018037 is 73081022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21911761 + 106276 = 4681^2 + 326^2 .

It is a cyclic number.

It is not a de Polignac number, because 22018037 - 2⁶ = 22017973 is a prime.

Together with 22018039, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_1390316 and since 22018037 and 1390316 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22018039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11009018 + 11009019.

It is an arithmetic number, because the mean of its divisors is an integer number (11009019).

Almost surely, 2^22018037 is an apocalyptic number.

It is an amenable number.

22018037 is a deficient number, since it is larger than the sum of its proper divisors (1).

22018037 is an equidigital number, since it uses as much as digits as its factorization.

22018037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 22018037 is about 4692.3381165470. The cubic root of 22018037 is about 280.2804884862.

Adding to 22018037 its reverse (73081022), we get a palindrome (95099059).

The spelling of 22018037 in words is "twenty-two million, eighteen thousand, thirty-seven".