1995191 has 8 divisors (see below), whose sum is σ = 2247168. Its totient is φ = 1755000.

The previous prime is 1995187. The next prime is 1995211. The reversal of 1995191 is 1915991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1995191 - 2² = 1995187 is a prime.

It is a congruent number.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2585 + ... + 3266.

It is an arithmetic number, because the mean of its divisors is an integer number (280896).

2^1995191 is an apocalyptic number.

1995191 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1995191 is a deficient number, since it is larger than the sum of its proper divisors (251977).

1995191 is a wasteful number, since it uses less digits than its factorization.

1995191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5893.

The product of its digits is 3645, while the sum is 35.

The square root of 1995191 is about 1412.5123008314. The cubic root of 1995191 is about 125.8910412714.

The spelling of 1995191 in words is "one million, nine hundred ninety-five thousand, one hundred ninety-one".