1681095 has 32 divisors (see below), whose sum is σ = 2987712. Its totient is φ = 801792.

The previous prime is 1681091. The next prime is 1681103. The reversal of 1681095 is 5901861.

It is a happy number.

It is not a de Polignac number, because 1681095 - 2² = 1681091 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1681091) 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, 7099 + ... + 7331.

It is an arithmetic number, because the mean of its divisors is an integer number (93366).

2^1681095 is an apocalyptic number.

1681095 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1681095 is a deficient number, since it is larger than the sum of its proper divisors (1306617).

1681095 is a wasteful number, since it uses less digits than its factorization.

1681095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291.

The product of its (nonzero) digits is 2160, while the sum is 30.

The square root of 1681095 is about 1296.5704762951. The cubic root of 1681095 is about 118.9042612020.

The spelling of 1681095 in words is "one million, six hundred eighty-one thousand, ninety-five".