18332101 has 2 divisors, whose sum is σ = 18332102. Its totient is φ = 18332100.

The previous prime is 18332099. The next prime is 18332113. The reversal of 18332101 is 10123381.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18267076 + 65025 = 4274^2 + 255^2 .

It is a cyclic number.

It is not a de Polignac number, because 18332101 - 2¹ = 18332099 is a prime.

Together with 18332099, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18332401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9166050 + 9166051.

It is an arithmetic number, because the mean of its divisors is an integer number (9166051).

Almost surely, 2^18332101 is an apocalyptic number.

It is an amenable number.

18332101 is a deficient number, since it is larger than the sum of its proper divisors (1).

18332101 is an equidigital number, since it uses as much as digits as its factorization.

18332101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 18332101 is about 4281.6002849402. The cubic root of 18332101 is about 263.6760882417.

Adding to 18332101 its reverse (10123381), we get a palindrome (28455482).

The spelling of 18332101 in words is "eighteen million, three hundred thirty-two thousand, one hundred one".