18337427137 has 2 divisors, whose sum is σ = 18337427138. Its totient is φ = 18337427136.

The previous prime is 18337427113. The next prime is 18337427201. The reversal of 18337427137 is 73172473381.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16477316496 + 1860110641 = 128364^2 + 43129^2 .

It is a cyclic number.

It is not a de Polignac number, because 18337427137 - 2¹¹ = 18337425089 is a prime.

It is a super-2 number, since 2×18337427137² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18337427107) 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, 9168713568 + 9168713569.

It is an arithmetic number, because the mean of its divisors is an integer number (9168713569).

Almost surely, 2^18337427137 is an apocalyptic number.

It is an amenable number.

18337427137 is a deficient number, since it is larger than the sum of its proper divisors (1).

18337427137 is an equidigital number, since it uses as much as digits as its factorization.

18337427137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 592704, while the sum is 46.

The spelling of 18337427137 in words is "eighteen billion, three hundred thirty-seven million, four hundred twenty-seven thousand, one hundred thirty-seven".