1641135 has 16 divisors (see below), whose sum is σ = 2697696. Its totient is φ = 851328.

The previous prime is 1641131. The next prime is 1641137. The reversal of 1641135 is 5311461.

It is not a de Polignac number, because 1641135 - 2² = 1641131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641131) 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 15 ways as a sum of consecutive naturals, for example, 924 + ... + 2033.

It is an arithmetic number, because the mean of its divisors is an integer number (168606).

2^1641135 is an apocalyptic number.

1641135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1641135 is a deficient number, since it is larger than the sum of its proper divisors (1056561).

1641135 is a wasteful number, since it uses less digits than its factorization.

1641135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3002.

The product of its digits is 360, while the sum is 21.

The square root of 1641135 is about 1281.0679138906. The cubic root of 1641135 is about 117.9545693157.

Adding to 1641135 its reverse (5311461), we get a palindrome (6952596).

The spelling of 1641135 in words is "one million, six hundred forty-one thousand, one hundred thirty-five".