1903061 has 2 divisors, whose sum is σ = 1903062. Its totient is φ = 1903060.

The previous prime is 1903007. The next prime is 1903063. The reversal of 1903061 is 1603091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1874161 + 28900 = 1369^2 + 170^2 .

It is a cyclic number.

It is not a de Polignac number, because 1903061 - 2¹⁰ = 1902037 is a prime.

It is a Sophie Germain prime.

Together with 1903063, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1903063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 951530 + 951531.

It is an arithmetic number, because the mean of its divisors is an integer number (951531).

2^1903061 is an apocalyptic number.

It is an amenable number.

1903061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1903061 is an equidigital number, since it uses as much as digits as its factorization.

1903061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 1903061 is about 1379.5147697651. The cubic root of 1903061 is about 123.9227102463.

It can be divided in two parts, 19030 and 61, that added together give a palindrome (19091).

The spelling of 1903061 in words is "one million, nine hundred three thousand, sixty-one".