1001895 has 16 divisors (see below), whose sum is σ = 1697760. Its totient is φ = 502784.

The previous prime is 1001839. The next prime is 1001911. The reversal of 1001895 is 5981001.

It is a cyclic number.

It is not a de Polignac number, because 1001895 - 2⁶ = 1001831 is a prime.

1001895 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1710 + ... + 2219.

It is an arithmetic number, because the mean of its divisors is an integer number (106110).

2^1001895 is an apocalyptic number.

1001895 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1001895 is a deficient number, since it is larger than the sum of its proper divisors (695865).

1001895 is a wasteful number, since it uses less digits than its factorization.

1001895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3954.

The product of its (nonzero) digits is 360, while the sum is 24.

The square root of 1001895 is about 1000.9470515467. The cubic root of 1001895 is about 100.0631268083.

Adding to 1001895 its reverse (5981001), we get a palindrome (6982896).

The spelling of 1001895 in words is "one million, one thousand, eight hundred ninety-five".