1630838 has 24 divisors (see below), whose sum is σ = 2815344. Its totient is φ = 706640.

The previous prime is 1630829. The next prime is 1630841. The reversal of 1630838 is 8380361.

It is a self number, because there is not a number n which added to its sum of digits gives 1630838.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5420 + ... + 5712.

It is an arithmetic number, because the mean of its divisors is an integer number (117306).

2^1630838 is an apocalyptic number.

1630838 is a deficient number, since it is larger than the sum of its proper divisors (1184506).

1630838 is a wasteful number, since it uses less digits than its factorization.

1630838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340 (or 329 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 1630838 is about 1277.0426774388. The cubic root of 1630838 is about 117.7073568057.

The spelling of 1630838 in words is "one million, six hundred thirty thousand, eight hundred thirty-eight".