18037688101 has 2 divisors, whose sum is σ = 18037688102. Its totient is φ = 18037688100.

The previous prime is 18037688077. The next prime is 18037688159. The reversal of 18037688101 is 10188673081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13635232900 + 4402455201 = 116770^2 + 66351^2 .

It is an emirp because it is prime and its reverse (10188673081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18037688101 - 2¹³ = 18037679909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18037688161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9018844050 + 9018844051.

It is an arithmetic number, because the mean of its divisors is an integer number (9018844051).

Almost surely, 2^18037688101 is an apocalyptic number.

It is an amenable number.

18037688101 is a deficient number, since it is larger than the sum of its proper divisors (1).

18037688101 is an equidigital number, since it uses as much as digits as its factorization.

18037688101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64512, while the sum is 43.

The spelling of 18037688101 in words is "eighteen billion, thirty-seven million, six hundred eighty-eight thousand, one hundred one".