1995081 has 8 divisors (see below), whose sum is σ = 2901984. Its totient is φ = 1209120.

The previous prime is 1995073. The next prime is 1995083. The reversal of 1995081 is 1805991.

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

It is not a de Polignac number, because 1995081 - 2³ = 1995073 is a prime.

It is a super-2 number, since 2×1995081² = 7960696393122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 60457 = 1995081 / (1 + 9 + 9 + 5 + 0 + 8 + 1).

It is not an unprimeable number, because it can be changed into a prime (1995083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30196 + ... + 30261.

It is an arithmetic number, because the mean of its divisors is an integer number (362748).

2^1995081 is an apocalyptic number.

1995081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1995081 is a deficient number, since it is larger than the sum of its proper divisors (906903).

1995081 is a wasteful number, since it uses less digits than its factorization.

1995081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60471.

The product of its (nonzero) digits is 3240, while the sum is 33.

The square root of 1995081 is about 1412.4733625807. The cubic root of 1995081 is about 125.8887276635. Note that the first 3 decimals are identical.

The spelling of 1995081 in words is "one million, nine hundred ninety-five thousand, eighty-one".