1995988 has 12 divisors (see below), whose sum is σ = 3676960. Its totient is φ = 945432.

The previous prime is 1995979. The next prime is 1995989. The reversal of 1995988 is 8895991.

It is a happy number.

It is a super-2 number, since 2×1995988² = 7967936192288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1995989) 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, 13056 + ... + 13207.

2^1995988 is an apocalyptic number.

It is an amenable number.

1995988 is a deficient number, since it is larger than the sum of its proper divisors (1680972).

1995988 is a wasteful number, since it uses less digits than its factorization.

1995988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26286 (or 26284 counting only the distinct ones).

The product of its digits is 233280, while the sum is 49.

The square root of 1995988 is about 1412.7943940999. The cubic root of 1995988 is about 125.9078018728.

The spelling of 1995988 in words is "one million, nine hundred ninety-five thousand, nine hundred eighty-eight".