1081905 has 32 divisors (see below), whose sum is σ = 1935360. Its totient is φ = 511680.

The previous prime is 1081901. The next prime is 1081907. The reversal of 1081905 is 5091801.

It is not a de Polignac number, because 1081905 - 2² = 1081901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081901) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12994 + ... + 13076.

It is an arithmetic number, because the mean of its divisors is an integer number (60480).

2^1081905 is an apocalyptic number.

1081905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1081905 is a deficient number, since it is larger than the sum of its proper divisors (853455).

1081905 is a wasteful number, since it uses less digits than its factorization.

1081905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181.

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

The square root of 1081905 is about 1040.1466242795. The cubic root of 1081905 is about 102.6588455184.

The spelling of 1081905 in words is "one million, eighty-one thousand, nine hundred five".