1803101 has 2 divisors, whose sum is σ = 1803102. Its totient is φ = 1803100.

The previous prime is 1803097. The next prime is 1803103. The reversal of 1803101 is 1013081.

1803101 = 949² + 950².

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 902500 + 900601 = 950^2 + 949^2 .

It is a cyclic number.

It is not a de Polignac number, because 1803101 - 2² = 1803097 is a prime.

Together with 1803103, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1803103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 901550 + 901551.

It is an arithmetic number, because the mean of its divisors is an integer number (901551).

2^1803101 is an apocalyptic number.

1803101 is the 950-th centered square number.

It is an amenable number.

1803101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1803101 is an equidigital number, since it uses as much as digits as its factorization.

1803101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1803101 is about 1342.7959636520. The cubic root of 1803101 is about 121.7138550511.

Adding to 1803101 its reverse (1013081), we get a palindrome (2816182).

The spelling of 1803101 in words is "one million, eight hundred three thousand, one hundred one".