1630315 has 4 divisors (see below), whose sum is σ = 1956384. Its totient is φ = 1304248.

The previous prime is 1630303. The next prime is 1630357. The reversal of 1630315 is 5130361.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1630315 - 2¹⁷ = 1499243 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1630292 and 1630301.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163027 + ... + 163036.

It is an arithmetic number, because the mean of its divisors is an integer number (489096).

2^1630315 is an apocalyptic number.

1630315 is a deficient number, since it is larger than the sum of its proper divisors (326069).

1630315 is an equidigital number, since it uses as much as digits as its factorization.

1630315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326068.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 1630315 is about 1276.8378910418. The cubic root of 1630315 is about 117.6947727785.

Adding to 1630315 its reverse (5130361), we get a palindrome (6760676).

The spelling of 1630315 in words is "one million, six hundred thirty thousand, three hundred fifteen".