18048168737 has 2 divisors, whose sum is σ = 18048168738. Its totient is φ = 18048168736.

The previous prime is 18048168731. The next prime is 18048168769. The reversal of 18048168737 is 73786184081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17108378401 + 939790336 = 130799^2 + 30656^2 .

It is an emirp because it is prime and its reverse (73786184081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18048168737 - 2⁶ = 18048168673 is a prime.

It is not a weakly prime, because it can be changed into another prime (18048168731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9024084368 + 9024084369.

It is an arithmetic number, because the mean of its divisors is an integer number (9024084369).

Almost surely, 2^18048168737 is an apocalyptic number.

It is an amenable number.

18048168737 is a deficient number, since it is larger than the sum of its proper divisors (1).

18048168737 is an equidigital number, since it uses as much as digits as its factorization.

18048168737 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1806336, while the sum is 53.

The spelling of 18048168737 in words is "eighteen billion, forty-eight million, one hundred sixty-eight thousand, seven hundred thirty-seven".