18032101 has 2 divisors, whose sum is σ = 18032102. Its totient is φ = 18032100.

The previous prime is 18032081. The next prime is 18032117. The reversal of 18032101 is 10123081.

It is an a-pointer prime, because the next prime (18032117) can be obtained adding 18032101 to its sum of digits (16).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17850625 + 181476 = 4225^2 + 426^2 .

It is a cyclic number.

It is not a de Polignac number, because 18032101 - 2¹¹ = 18030053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18032141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9016050 + 9016051.

It is an arithmetic number, because the mean of its divisors is an integer number (9016051).

Almost surely, 2^18032101 is an apocalyptic number.

It is an amenable number.

18032101 is a deficient number, since it is larger than the sum of its proper divisors (1).

18032101 is an equidigital number, since it uses as much as digits as its factorization.

18032101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 18032101 is about 4246.4221410500. The cubic root of 18032101 is about 262.2298402686.

Adding to 18032101 its reverse (10123081), we get a palindrome (28155182).

The spelling of 18032101 in words is "eighteen million, thirty-two thousand, one hundred one".