18336119439437 has 2 divisors, whose sum is σ = 18336119439438. Its totient is φ = 18336119439436.

The previous prime is 18336119439427. The next prime is 18336119439487. The reversal of 18336119439437 is 73493491163381.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10349018226121 + 7987101213316 = 3216989^2 + 2826146^2 .

It is a cyclic number.

It is not a de Polignac number, because 18336119439437 - 2¹⁸ = 18336119177293 is a prime.

It is a super-2 number, since 2×18336119439437² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18336119439437.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18336119439427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9168059719718 + 9168059719719.

It is an arithmetic number, because the mean of its divisors is an integer number (9168059719719).

Almost surely, 2^{18336119439437} is an apocalyptic number.

It is an amenable number.

18336119439437 is a deficient number, since it is larger than the sum of its proper divisors (1).

18336119439437 is an equidigital number, since it uses as much as digits as its factorization.

18336119439437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35271936, while the sum is 62.

The spelling of 18336119439437 in words is "eighteen trillion, three hundred thirty-six billion, one hundred nineteen million, four hundred thirty-nine thousand, four hundred thirty-seven".