1995629 has 2 divisors, whose sum is σ = 1995630. Its totient is φ = 1995628.

The previous prime is 1995611. The next prime is 1995649. The reversal of 1995629 is 9265991.

1995629 is nontrivially palindromic in base 4.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1054729 + 940900 = 1027^2 + 970^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1995629 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1995649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 997814 + 997815.

It is an arithmetic number, because the mean of its divisors is an integer number (997815).

2^1995629 is an apocalyptic number.

It is an amenable number.

1995629 is a deficient number, since it is larger than the sum of its proper divisors (1).

1995629 is an equidigital number, since it uses as much as digits as its factorization.

1995629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43740, while the sum is 41.

The square root of 1995629 is about 1412.6673352209. The cubic root of 1995629 is about 125.9002527941.

The spelling of 1995629 in words is "one million, nine hundred ninety-five thousand, six hundred twenty-nine".