1630039 has 4 divisors (see below), whose sum is σ = 1646280. Its totient is φ = 1613800.

The previous prime is 1630021. The next prime is 1630049. The reversal of 1630039 is 9300361.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1630039 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1630019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7969 + ... + 8170.

It is an arithmetic number, because the mean of its divisors is an integer number (411570).

2^1630039 is an apocalyptic number.

1630039 is a deficient number, since it is larger than the sum of its proper divisors (16241).

1630039 is a wasteful number, since it uses less digits than its factorization.

1630039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16240.

The product of its (nonzero) digits is 486, while the sum is 22.

The square root of 1630039 is about 1276.7298069678. The cubic root of 1630039 is about 117.6881307920.

The spelling of 1630039 in words is "one million, six hundred thirty thousand, thirty-nine".