1826561 has 8 divisors (see below), whose sum is σ = 2035584. Its totient is φ = 1624720.

The previous prime is 1826557. The next prime is 1826563. The reversal of 1826561 is 1656281.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1826561 - 2² = 1826557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1826563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1250 + ... + 2283.

It is an arithmetic number, because the mean of its divisors is an integer number (254448).

2^1826561 is an apocalyptic number.

1826561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1826561 is a deficient number, since it is larger than the sum of its proper divisors (209023).

1826561 is a wasteful number, since it uses less digits than its factorization.

1826561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3591.

The product of its digits is 2880, while the sum is 29.

The square root of 1826561 is about 1351.5032371400. The cubic root of 1826561 is about 122.2394517798.

The spelling of 1826561 in words is "one million, eight hundred twenty-six thousand, five hundred sixty-one".