1630413 has 6 divisors (see below), whose sum is σ = 2355054. Its totient is φ = 1086936.

The previous prime is 1630411. The next prime is 1630423. The reversal of 1630413 is 3140361.

It can be written as a sum of positive squares in only one way, i.e., 1397124 + 233289 = 1182^2 + 483^2 .

It is not a de Polignac number, because 1630413 - 2¹ = 1630411 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1630411) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 90570 + ... + 90587.

It is an arithmetic number, because the mean of its divisors is an integer number (392509).

2^1630413 is an apocalyptic number.

It is an amenable number.

1630413 is a deficient number, since it is larger than the sum of its proper divisors (724641).

1630413 is a wasteful number, since it uses less digits than its factorization.

1630413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181163 (or 181160 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1630413 is about 1276.8762665192. The cubic root of 1630413 is about 117.6971309846.

Adding to 1630413 its reverse (3140361), we get a palindrome (4770774).

The spelling of 1630413 in words is "one million, six hundred thirty thousand, four hundred thirteen".