18803101 has 4 divisors (see below), whose sum is σ = 18829152. Its totient is φ = 18777052.

The previous prime is 18803077. The next prime is 18803129. The reversal of 18803101 is 10130881.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10130881 = 79 ⋅128239.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18803101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18803131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11911 + ... + 13396.

It is an arithmetic number, because the mean of its divisors is an integer number (4707288).

Almost surely, 2^18803101 is an apocalyptic number.

It is an amenable number.

18803101 is a deficient number, since it is larger than the sum of its proper divisors (26051).

18803101 is an equidigital number, since it uses as much as digits as its factorization.

18803101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26050.

The product of its (nonzero) digits is 192, while the sum is 22.

The square root of 18803101 is about 4336.2542591504. The cubic root of 18803101 is about 265.9151980605.

Adding to 18803101 its reverse (10130881), we get a palindrome (28933982).

The spelling of 18803101 in words is "eighteen million, eight hundred three thousand, one hundred one".