1803725101 has 2 divisors, whose sum is σ = 1803725102. Its totient is φ = 1803725100.

The previous prime is 1803725057. The next prime is 1803725107. The reversal of 1803725101 is 1015273081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1699583076 + 104142025 = 41226^2 + 10205^2 .

It is a cyclic number.

It is not a de Polignac number, because 1803725101 - 2¹³ = 1803716909 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1803725101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1803725107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 901862550 + 901862551.

It is an arithmetic number, because the mean of its divisors is an integer number (901862551).

Almost surely, 2^1803725101 is an apocalyptic number.

It is an amenable number.

1803725101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1803725101 is an equidigital number, since it uses as much as digits as its factorization.

1803725101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 1803725101 is about 42470.2849178105. The cubic root of 1803725101 is about 1217.2789622721.

Adding to 1803725101 its reverse (1015273081), we get a palindrome (2818998182).

The spelling of 1803725101 in words is "one billion, eight hundred three million, seven hundred twenty-five thousand, one hundred one".