1630441 has 2 divisors, whose sum is σ = 1630442. Its totient is φ = 1630440.

The previous prime is 1630429. The next prime is 1630451. The reversal of 1630441 is 1440361.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1265625 + 364816 = 1125^2 + 604^2 .

It is a cyclic number.

It is not a de Polignac number, because 1630441 - 2¹⁷ = 1499369 is a prime.

It is not a weakly prime, because it can be changed into another prime (1630411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 815220 + 815221.

It is an arithmetic number, because the mean of its divisors is an integer number (815221).

2^1630441 is an apocalyptic number.

It is an amenable number.

1630441 is a deficient number, since it is larger than the sum of its proper divisors (1).

1630441 is an equidigital number, since it uses as much as digits as its factorization.

1630441 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 19.

The square root of 1630441 is about 1276.8872307295. The cubic root of 1630441 is about 117.6978047404.

Adding to 1630441 its product of nonzero digits (288), we get a square (1630729 = 1277²).

The spelling of 1630441 in words is "one million, six hundred thirty thousand, four hundred forty-one".