1630801 has 2 divisors, whose sum is σ = 1630802. Its totient is φ = 1630800.

The previous prime is 1630781. The next prime is 1630813. The reversal of 1630801 is 1080361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1404225 + 226576 = 1185^2 + 476^2 .

It is a cyclic number.

It is not a de Polignac number, because 1630801 - 2¹³ = 1622609 is a prime.

It is a Chen prime.

1630801 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1630841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 815400 + 815401.

It is an arithmetic number, because the mean of its divisors is an integer number (815401).

2^1630801 is an apocalyptic number.

It is an amenable number.

1630801 is a deficient number, since it is larger than the sum of its proper divisors (1).

1630801 is an equidigital number, since it uses as much as digits as its factorization.

1630801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1630801 is about 1277.0281907617. The cubic root of 1630801 is about 117.7064666284.

The spelling of 1630801 in words is "one million, six hundred thirty thousand, eight hundred one".