1995389 has 4 divisors (see below), whose sum is σ = 2176800. Its totient is φ = 1813980.

The previous prime is 1995359. The next prime is 1995391. The reversal of 1995389 is 9835991.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9835991 = 11 ⋅894181.

It is a cyclic number.

It is not a de Polignac number, because 1995389 - 2¹² = 1991293 is a prime.

It is a super-2 number, since 2×1995389² = 7963154522642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1995349) 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, 90689 + ... + 90710.

It is an arithmetic number, because the mean of its divisors is an integer number (544200).

2^1995389 is an apocalyptic number.

It is an amenable number.

1995389 is a deficient number, since it is larger than the sum of its proper divisors (181411).

1995389 is a wasteful number, since it uses less digits than its factorization.

1995389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181410.

The product of its digits is 87480, while the sum is 44.

The square root of 1995389 is about 1412.5823869778. The cubic root of 1995389 is about 125.8952055514.

The spelling of 1995389 in words is "one million, nine hundred ninety-five thousand, three hundred eighty-nine".