1995630 has 128 divisors (see below), whose sum is σ = 6386688. Its totient is φ = 387072.

The previous prime is 1995629. The next prime is 1995649. The reversal of 1995630 is 365991.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1995591 and 1995600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 46389 + ... + 46431.

It is an arithmetic number, because the mean of its divisors is an integer number (49896).

2^1995630 is an apocalyptic number.

1995630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1995630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3193344).

1995630 is an abundant number, since it is smaller than the sum of its proper divisors (4391058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1995630 is a wasteful number, since it uses less digits than its factorization.

1995630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90.

The product of its (nonzero) digits is 7290, while the sum is 33.

The square root of 1995630 is about 1412.6676891612. The cubic root of 1995630 is about 125.9002738235.

The spelling of 1995630 in words is "one million, nine hundred ninety-five thousand, six hundred thirty".