1988795 has 4 divisors (see below), whose sum is σ = 2386560. Its totient is φ = 1591032.

The previous prime is 1988759. The next prime is 1988797. The reversal of 1988795 is 5978891.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1988795 - 2¹⁸ = 1726651 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1988797) 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 3 ways as a sum of consecutive naturals, for example, 198875 + ... + 198884.

It is an arithmetic number, because the mean of its divisors is an integer number (596640).

2^1988795 is an apocalyptic number.

1988795 is a deficient number, since it is larger than the sum of its proper divisors (397765).

1988795 is an equidigital number, since it uses as much as digits as its factorization.

1988795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397764.

The product of its digits is 181440, while the sum is 47.

The square root of 1988795 is about 1410.2464323656. The cubic root of 1988795 is about 125.7563739561.

The spelling of 1988795 in words is "one million, nine hundred eighty-eight thousand, seven hundred ninety-five".