1995278 has 8 divisors (see below), whose sum is σ = 3001320. Its totient is φ = 994840.

The previous prime is 1995271. The next prime is 1995289. The reversal of 1995278 is 8725991.

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

It is a super-2 number, since 2×1995278² = 7962268594568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1995271) 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 3 ways as a sum of consecutive naturals, for example, 353 + ... + 2028.

It is an arithmetic number, because the mean of its divisors is an integer number (375165).

2^1995278 is an apocalyptic number.

1995278 is a deficient number, since it is larger than the sum of its proper divisors (1006042).

1995278 is a wasteful number, since it uses less digits than its factorization.

1995278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2802.

The product of its digits is 45360, while the sum is 41.

The square root of 1995278 is about 1412.5430966877. The cubic root of 1995278 is about 125.8928710647.

The spelling of 1995278 in words is "one million, nine hundred ninety-five thousand, two hundred seventy-eight".