1995129 has 12 divisors (see below), whose sum is σ = 2975232. Its totient is φ = 1287000.

The previous prime is 1995121. The next prime is 1995139. The reversal of 1995129 is 9215991.

It is not a de Polignac number, because 1995129 - 2³ = 1995121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1995093 and 1995102.

It is not an unprimeable number, because it can be changed into a prime (1995121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3297 + ... + 3854.

It is an arithmetic number, because the mean of its divisors is an integer number (247936).

2^1995129 is an apocalyptic number.

It is an amenable number.

1995129 is a deficient number, since it is larger than the sum of its proper divisors (980103).

1995129 is a wasteful number, since it uses less digits than its factorization.

1995129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7188 (or 7185 counting only the distinct ones).

The product of its digits is 7290, while the sum is 36.

The square root of 1995129 is about 1412.4903539494. The cubic root of 1995129 is about 125.8897372483.

The spelling of 1995129 in words is "one million, nine hundred ninety-five thousand, one hundred twenty-nine".