1890041 has 2 divisors, whose sum is σ = 1890042. Its totient is φ = 1890040.

The previous prime is 1890037. The next prime is 1890079. The reversal of 1890041 is 1400981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1525225 + 364816 = 1235^2 + 604^2 .

It is a cyclic number.

It is not a de Polignac number, because 1890041 - 2² = 1890037 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1889989 and 1890016.

It is not a weakly prime, because it can be changed into another prime (1890241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 945020 + 945021.

It is an arithmetic number, because the mean of its divisors is an integer number (945021).

2^1890041 is an apocalyptic number.

It is an amenable number.

1890041 is a deficient number, since it is larger than the sum of its proper divisors (1).

1890041 is an equidigital number, since it uses as much as digits as its factorization.

1890041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 1890041 is about 1374.7876199617. The cubic root of 1890041 is about 123.6394530232.

The spelling of 1890041 in words is "one million, eight hundred ninety thousand, forty-one".