1630117 has 2 divisors, whose sum is σ = 1630118. Its totient is φ = 1630116.

The previous prime is 1630093. The next prime is 1630127. The reversal of 1630117 is 7110361.

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., 857476 + 772641 = 926^2 + 879^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1630117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1630094 and 1630103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1630127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 815058 + 815059.

It is an arithmetic number, because the mean of its divisors is an integer number (815059).

2^1630117 is an apocalyptic number.

It is an amenable number.

1630117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1630117 is an equidigital number, since it uses as much as digits as its factorization.

1630117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 126, while the sum is 19.

The square root of 1630117 is about 1276.7603533945. The cubic root of 1630117 is about 117.6900079511.

Adding to 1630117 its reverse (7110361), we get a palindrome (8740478).

The spelling of 1630117 in words is "one million, six hundred thirty thousand, one hundred seventeen".